Henry H. Cross Paintings & Artwork for Sale | Henry H. Cross Art Value Price Guide

Sep. 21, 2024
HENRY HERMAN CROSS (American 1837-1918) A PAINTING, "Harness Racing," 1882
Est: $1,000 - $2,000
HENRY HERMAN CROSS (American 1837-1918) A PAINTING, "Harness Racing," 1882, oil on canvas, signed and dated L/L, "H.H. Cross / 1882." 24" x 36"
Simpson Galleries, LLC
May. 12, 2023
Painting, Henry Herman Cross
Est: $1,000 - $1,500
Henry Herman Cross (American, 1837-1918), Young Native American, oil on canvas, signed upper right, sight: 23.25"h x 19.5"w, overall (with frame): 32"h x 28.25"w
Clars Auctions
Jan. 19, 2023
HENRY H. CROSS (1837-1918) The Old Union Race Course, Long Island, New York
Est: $40,000 - $60,000
HENRY H. CROSS (1837-1918) The Old Union Race Course, Long Island, New York: Wednesday, May 10, 1854 oil on canvas 42 x 60 in. (106.7 x 152.4 cm.)
Christie's
Dec. 01, 2022
CROSS, H[enry] H. (American, 1837-1918). Barrel of Apples. ...
Est: $500 - $700
CROSS, H[enry] H. (American, 1837-1918). Barrel of Apples. 1916. Oil on canvas. Visible area: 24 ½ x 30”. Some cracking to paint. Framed (frame size: 29 ½ x 34 ½”). Some wear to frame. Good. Cross was an adventurous youth, who ran away with the circus at age 15 (and again years later), and then traveled to Paris to learn painting with Rosa Bonheur. When he returned to the U.S., he learned Sioux and became one of the best-known portraitists of Native Americans (Buffalo Bill Cody called him “the greatest painter of Indian portraiture of all times”).
Potter & Potter Auctions Inc.
Nov. 01, 2022
Henry Herman Cross (1837-1918) Chief Red Bear, Arapahoe 24 x 20 in. framed 29 x 25 in.
Est: $3,000 - $5,000
Henry Herman Cross (1837-1918) Chief Red Bear, Arapahoe signed, titled, inscribed and dated 'Original Sketch from lief (sic) 1903. / By H.H. Cross.' (lower right) oil on canvas 24 x 20 in. framed 29 x 25 in.
Bonhams
Jul. 12, 2022
Henry Herman Cross (1837-1918) The Trotter Pancoast 28 x 48in (71.1 x 121.9cm)
Est: $2,000 - $3,000
Henry Herman Cross (1837-1918) The Trotter Pancoast signed and dated 'H.H. Cross 1886' (lower left) oil on canvas 28 x 48in (71.1 x 121.9cm) For further information on this lot please visit the Bonhams website
Bonhams
Jun. 07, 2022
HENRY H. CROSS (AMERICAN, 1837-1918) PERILS OF THE CHASE
Est: $1,000 - $1,500
Henry H. Cross (American, 1837-1918) Perils of the Chase Signed 'H.H. Cross' bottom right; also titled on upper stretcher verso, oil on canvas 29 3/4 x 45 1/2 in. (75.6 x 115.6cm) Provenance Private Collection, Pennsylvania. Frame: 37 7/8 x 53 1/2 x 2 in.
Freeman's | Hindman
Apr. 28, 2022
Henry H. Cross - Portrait of a Cow
Est: $500 - $800
Lot 57 Henry H. Cross American (1837-1918) Portrait of a Cow oil on board signed lower left 9 1/2 x 7 1/2 inches Provenance: Property from the estate of Joan Kessler a well regarded textile designer form New York City
Capsule Gallery Auction
May. 19, 2021
Cross, Henri H. - Old photograph of an Lakotan chief portrait - c1900
Est: $100 - $200
Cross, Henri H. (1837-1918) Photographie ancienne d'un portrait de chef lakota (c1900) Description (FR): Photographie d'un portrait peint par l'artiste de Spotted Tail (1823-1881), chef lakota de la bande des Brûlés, titrée et signée en haut à gauche Spotted Tail Chief of the Brulé Sioux, H.H.Cross Description (EN): Photograph of a portrait painted by the artist of the Lakotan chief Spotted Tail (1823-1881), titled and signed upper left Spotted Tail Chief of the Brulé Sioux, H.H. Cross Dimension (PO): 6 1/4" x 8 1/2" Dimension (CM): 15.88 x 21.59 cm Rapport de condition: Sur demande, nous nous ferons un plaisir de répondre à vos questions de manière détaillée. Condition report: Upon request, We will gladly answer all your inquiries in a detailed manner.
Champagne Auctions
Apr. 18, 2021
H H Cross (1837 - 1918)
Est: $1,000 - $1,500
Signed and dated (1892) loewr right. Oil on Canvas. Signed of repair verso. Sight Size: 30 x 25 in. Overall Framed Size: 32 x 27 in.
Helmuth Stone
Dec. 10, 2020
Henry Herman Cross (American, 1837-1918) Antelope in a Landscape, 1895
Est: $1,000 - $2,000
Henry Herman Cross (American, 1837-1918) Antelope in a Landscape, 1895 oil on canvas signed H.H. Cross and dated (lower right) 40 x 30 inches.
Hindman
Sep. 29, 2020
Henry Herman Cross, (1837-1918, Buffalo in a river landscape, Oil on canvas, 30" H x 45" W
Est: $3,000 - $5,000
Henry Herman Cross (1837-1918, Buffalo in a river landscape Oil on canvas Signed lower left: H. H. Cross 30" H x 45" W Provenance: Sold: John Moran Auctioneers, Altadena, CA, October 25, 2005, Lot 154
John Moran Auctioneers
May. 18, 2019
HENRY H. CROSS (AMERICAN 1837-1918)
Est: $1,000 - $1,500
HENRY H. CROSS (AMERICAN 1837-1918) Lions' Fight, oil on canvas 43 x 54 cm (16 7/8 x 21 1/4 in.) signed lower left
Shapiro Auctions LLC
Sep. 28, 2018
H.H. Cross Long Feather Oil on Canvas
Est: $5,000 - $7,000
Henry H. Cross (1837 - 1918). Oil on canvas portrait titled Scout Long Feather Sioux. Painting is signed and titled along the upper left.
Revere Auctions
Aug. 21, 2018
Henry Herman Cross, (1837 - 1918 Chicago, IL), Dutch scene with windmill and figures, 1905, Oil on canvas, 24" H x 30" W
Est: $300 - $500
Henry Herman Cross (1837 - 1918 Chicago, IL) Dutch scene with windmill and figures, 1905 Oil on canvas Signed and dated lower left: H.H. Cross 24" H x 30" W
John Moran Auctioneers
Aug. 19, 2018
HENRY H. CROSS (AMERICAN 1837-1918). DARK BAY RACEHORSE WITH A JOCKEY UP, ON A TRACK BY A STARTING POLE, 1892.
Est: $4,000 - $6,000
Oil on canvas, 28 x 36 1/2 inches. Signed "H.H. Cross" and dated 1892, l.l. In an ornate gilt frame.
Bourgeault-Horan Antiquarians
Apr. 28, 2018
HENRI H. CROSS (1837-1918): "GLADSTONE" AT SEVENTEEN MONTHS OLD
Est: $1,000 - $2,000
HENRI H. CROSS (1837-1918): "GLADSTONE" AT SEVENTEEN MONTHS OLD Oil on board, 1890, signed 'H.H. Cross', dated and inscribed 'From Life' lower left, titled, dated and inscribed 'Painted from life by H.H. Cross' on the reverse. 15 3/4 x 22 in., 22 x 28 in. (frame). Provenance: Jeffrey Tillou Antiques and Fine Art. From a Private Collector, Washington, DC
STAIR
Apr. 26, 2018
HENRY HERMAN CROSS, American (1837-1918), Carriage Ride, oil on canvas, signed "H. H. Cross," dated "1878" and inscribed "NY" lower...
Est: $3,000 - $5,000
HENRY HERMAN CROSS American (1837-1918) Carriage Ride oil on canvas, signed "H. H. Cross," dated "1878" and inscribed "NY" lower left. 30 x 48 inches Provenance: Private Collection, Connecticut. Other Notes: Request a preliminary shipping/packing quote. Tags: 19th century, Horses, Oil Painting
Shannon's
Apr. 24, 2018
Henry Herman Cross (1837-1918) A portrait of Bird Chief, Arapaho Tribe 29
Est: $4,000 - $6,000
Henry Herman Cross (1837-1918) A portrait of Bird Chief, Arapaho Tribe 29 x 25in overall: 33 1/2 x 29 1/2in
Bonhams
Apr. 18, 2018
Henry Herman Cross American, 1837-1918 Wa-She-Choon (White Man), 1862
Est: $5,000 - $7,000
Henry Herman Cross American, 1837-1918 Wa-She-Choon (White Man), 1862 Signed H. H. Cross., dated 1862 and inscribed No. 31 "Wa-She-Choon."/White Man. (ul) Oil on canvas 36 x 29 inches Unframed Provenance: Berry-Hill Galleries, New York Born in Flemingville, NY, Henry H. Cross was a restless youth who ran away several times as a boy; at 16, in 1853, he traveled to Paris to study animal painting with Rosa Bonheur. When he returned in 1855 he went west with a circus, working as a painter of animal and Indian portraits. He was in Minnesota during the 1862 Sioux uprising, painting a number of portraits of the particpants, including this one of Wa-She-Choon, one of 39 men sentenced to be hanged on December 26, 1862 as a result of the rebellion.
DOYLE Auctioneers & Appraisers
Jun. 17, 2017
H.H. Cross O/C Hunting Dog Portrait
Est: $3,000 - $5,000
Large Henry Herman Cross (1837-1918, United States) oil on canvas portrait of a springer spaniel hunting dog with pheasant in its mouth; signed lower left H.H. Cross. Canvas is relined, has a 1 in. repair in the trees at the top center, 8 in. long tear and repair in the upper right corner and a 2 in. repair between the front paws, professional restoration is very well done. 36.5 in. high x 46.25 in. wide Frame: 52.5 in. high x 62.25 in. wide.
Fontaine's Auction Gallery
Jan. 26, 2017
Henry H. Cross, Painting of Chief Little Paul 1862
Est: $2,000 - $4,000
Artist: Henry H. Cross (1837-1918); Title: "Chief Little Paul"; Medium: Oil on board; Year or Era Produced: Dated 1862; Signature: Upper left; Sight Area Approximate Measurement: 15.75" x 12.5"; FrameApproximate Measurement: 25.75" x 22.75" x 2"; Approximate Weight: 9 Lbs; Frame: Stained wood
J Levine Auction & Appraisal LLC
Nov. 19, 2014
Cross, Henry H. - Shelby "Pike" Barnes up in...
Est: $10,000 - $12,000
SHELBY "PIKE" BARNES UP IN MARCUS DALY'S SILKS Marcus Daly was known as the "Copper King" as his wealth was derived from his Anaconda Copper Mine in Butte, Montana. He used his enormous wealth to build state-of-the-art training facilities and to acquire top bloodstock. In the 1880s Daly built a covered track with 400,000 board feet of lumber. It had its own heating plant and cost $10,000. The track was layered with eight inches of foam, topped by tanbark and surfaced with sod. The track was enclosed in 1892. Ada Powell, The Dalys of the Bitter Root, Bitterroot River Valley, Montana: 1989, p. 110 In 1889 Daly spent $160,000 on horses, mostly Thoroughbreds, including such colts as St. Blaze, Sierra Madre, Warwick, Norfolk, and Ononodago. Daly had a plan to obtain the greatest horses from all over the world and to breed these horses until all the flaws were eliminated. Henry Herman Cross was a famous American 19th century painter of Native American portraits and racehorses. He was described by Buffalo Bill Cody, a close personal friend, as the "greatest painter of Indian portraiture of all times." As a very young man, Henry ran away from home twice to join the circus, but in both instances he was made to return home. At 16 he boarded a freighter and traveled to Paris where he befriended the famous French animal painter Rosa Bonheur with whom he would study for three years. He was described by one biographer as: "A chubby little fellow who wore heavy rimless glasses, had a walrus mustache, and a preference for wearing double-breasted coats with velvet collars." H. H. Cross became well known for the scenes he painted on circus wagons for the Barnum & Bailey Circus. After a stint as a purely commercial painter, Cross traveled to the West where he became fluent in the Sioux language. His grasp of the language allowed him access to paint portraits of many of the famous Sioux warriors as well as the great chiefs of the late 19th century. Cross painted hundreds of portraits of Native Americans including that of the famous Sioux chief Sitting Bull. Daly commissioned Cross to paint his horses on his Bitterroot Stock Farm near Hamilton, Montana. In the summers of 1891 and 1892, Cross painted a number of Daly's best horses, and he used the beautiful scenery of Daly's expansive stock farm for the backdrop. Two of the paintings were 7 feet by 10 feet and weighed roughly 300 pounds each. The pictures Cross painted for Daly in 1891 and 1892 are reputed to have cost Daly between $20,000 and $30,000. Daly's estate passed to his granddaughter, Baroness Margit Sigray Bessenyey, and then descended through the family until 1987 at which point they were sold at auction.
The Sporting Art Auction
Sep. 28, 2014
Attributed to Henry H. Cross, (American, 1837-1918), Portrait of Uncapapa Sioux Indian Chief, Rain in the Face
Est: $1,000 - $2,000
Attributed to Henry H. Cross (American, 1837-1918) Portrait of Uncapapa Sioux Indian Chief, Rain in the Face oil on canvas 15 1/4 x 12 1/4 inches.
Hindman
Sep. 28, 2014
Attributed to Henry H. Cross, (American, 1837-1918), Portrait of Ta-Tay-Hac-Don, Sioux Indian Chief
Est: $1,000 - $2,000
Attributed to Henry H. Cross (American, 1837-1918) Portrait of Ta-Tay-Hac-Don, Sioux Indian Chief oil on canvas laid to panel 16 x 13 inches.
Hindman
Sep. 28, 2014
Attributed to Henry H. Cross, (American, 1837-1918), Portrait of an Indian Chief
Est: $1,000 - $2,000
Attributed to Henry H. Cross (American, 1837-1918) Portrait of an Indian Chief oil on canvas laid to panel 12 3/4 x 10 3/4 inches.
Hindman
Sep. 28, 2014
Attributed to Henry H. Cross, (American, 1837-1918), Portrait of an Indian Chief
Est: $1,000 - $2,000
Attributed to Henry H. Cross (American, 1837-1918) Portrait of an Indian Chief oil on canvas laid to panel 13 x 10 3/4 inches.
Hindman
Sep. 28, 2014
Attributed to Henry H. Cross, (American, 1837-1918), Portrait of an Indian Chief
Est: $1,000 - $2,000
Attributed to Henry H. Cross (American, 1837-1918) Portrait of an Indian Chief oil on canvas 15 x 12 inches.
Hindman
Sep. 28, 2014
Attributed to Henry H. Cross, (American, 1837-1918), Portrait of Uncapapa Sioux Honorary High Chief, Sitting Bull
Est: $1,000 - $2,000
Attributed to Henry H. Cross (American, 1837-1918) Portrait of Uncapapa Sioux Honorary High Chief, Sitting Bull oil on canvas 15 x 12 1/4 inches.
Hindman
Jan. 25, 2014
MOKI SNAKE PRIEST OF ARIZONA BY HENRY HERMAN CROSS (AMERICA, 1837-1918).
Est: $5,000 - $7,000
MOKI SNAKE PRIEST OF ARIZONA BY HENRY HERMAN CROSS (AMERICA, 1837-1918). Oil on canvas, signed verso. Depicts the Native American Snake Priest wearing a polychrome feathered headdress and costume while holding a serpent. The reverse reading "Moki or Hopi Snake Priest of Arizona Painted from life for Mr. Paul Morton. By H. H. Cross. 1903" and bearing a label reading "This Painting is the Property of the Atchison, Topeka & Santa Fe Railway Co. Advertising Department, Chicago, Ill. It is listed as Office Fixtures and must not be removed from Company premises". 30.25"h. 25"w., in a modern wood and linen frame, 35.25"h. 30.25"w. Cross was known to have an adventurous spirit which led him to study with the renowned animal painter, Rosa Bonheur, in Paris from 1853-1855. By the later part of the 19th century Cross began painting Indian ceremonies such as the snake dance and visiting Hopi pueblos in Arizona. Cross is chiefly recognized as a prolific painter of the Native America culture, his work is represented throughout important public institutions and private collections alike.
Garth's Auctioneers & Appraisers
Nov. 13, 2013
Henry H. Cross (1837-1918), "perils of the chase", Signed lower right, "H.H. Cross," oil on canvas, framed, title handwritten across st
Est: $3,000 - $5,000
Henry H. Cross (1837-1918) "perils of the chase" Signed lower right, "H.H. Cross," oil on canvas, framed, title handwritten across stretcher. 29 in. x 45 in. (sight)
Freeman's | Hindman
Oct. 16, 2013
Henry H. Cross American, 1837-1918 Dark Racehorse with a Jockey Up by a Racetrack in a River Landscape, 1892
Est: $4,000 - $6,000
Henry H. Cross American, 1837-1918 Dark Racehorse with a Jockey Up by a Racetrack in a River Landscape, 1892 Signed H. H. Cross. and dated 1892 (ll) Oil on canvas 28 1/16 x 36 1/8 inches Provenance: Commissioned by Marcus Daly (1842-1900), President of Anaconda Copper Mining Company, Daly Stock Farm, Riverside, MT, 1891-1900 Estate of Marcus Daly, 1900-41 To his granddaughter, Baroness Margit Sigray Bessenyey To her stepson, Francis Bessenyey, 1984-87 C
DOYLE Auctioneers & Appraisers
Sep. 14, 2013
Henry Herman Cross (Am., 1837-1918), Horse & Foal
Est: $1,000 - $3,000
Henry Herman Cross (Am., 1837-1918), Horse & Foal oil on paper, signed at lower right "H. H. Cross," depicting a mare and her foal against a landscape in grisaille, presented under glass in the likely original golden oak frame with gilt liner. SS 15.5 x 22.5 in.; DOA 22 x 29 in.
Leland Little Auctions
Jan. 25, 2013
HENRY HERMAN CROSS (1837-1918)
Est: $4,000 - $6,000
HENRY HERMAN CROSS (1837-1918) Rider on a Sulky signed and dated H.H. Cross 1884 lower left oil on canvas 30 x 54 in.
Christie's
Nov. 13, 2011
Henry Herman Cross: Red Tomahawk
Est: $4,000 - $7,000
Painting
Altermann Galleries
Nov. 20, 2010
PROPERTY OF A PROMINENT TEXAS COLLECTOR HENRY HERMAN C
Est: $4,000 - $6,000
PROPERTY OF A PROMINENT TEXAS COLLECTOR HENRY HERMAN CROSS (American, 1837-1918) Buffalo by the River, 1909 Oil on canvas 28 x 46 inches (71.1 x 116.8 cm) Signed and dated lower right: H.H. Cross 1909
Heritage Auctions
Jan. 15, 2010
H.H. CROSS [AMER. 1837-1918], OIL ON CANVAS,
Est: $800 - $1,000
H.H. CROSS [AMER. 1837-1918], OIL ON CANVAS, INDIANS BEING ATTACKED BY BEAR, 14" X 22": ex-collection James Keene
DuMouchelles
Mar. 30, 2008
Attributed to Henry H. Cross (American, 1837-1918) "Portrait of an African Boy", oil on canvas, 22" x 18", unsigned. Presented in a period giltwood frame.
Est: $500 - $800
Attributed to Henry H. Cross (American, 1837-1918) "Portrait of an African Boy", oil on canvas, 22" x 18", unsigned. Presented in a period giltwood frame.
New Orleans Auction Galleries
Feb. 12, 2008
Henry H. Cross American, 1837-1918 Major McKinley (Brindle Great Dane), Owner General J.T. Torrence , 1896
Est: $5,000 - $7,000
Henry H. Cross American, 1837-1918 Major McKinley (Brindle Great Dane), Owner General J.T. Torrence , 1896 Signed H.H. Cross (lr) and dated 1896 (lr); inscribed on the dog's collar Major McKinley/<22750>/Gen. J.T. Torrence/88 Bellevue Pl./Chicago, Ill. Oil on canvas 52 x 75 5/8 inches (132 x 192.2 cm)
Doyle New York
Nov. 28, 2007
Major McKinley , the Property of Gen. J.T. Torrence
Est: $10,000 - $15,000
Henry H. Cross (American, 1837-1918) Major McKinley, the Property of Gen. J.T. Torrence signed and dated 'H.H.CROSS/1896' (lower right) and inscribed 'Dog owned by J.T. Torrence 88 Belleview Place Chicago Il' (on the dog's collar) oil on canvas 52¼ x 75¾ in. (132.7 x 192.4 cm.)
Christie's
Oct. 23, 2007
Henry H. Cross (1837-1918 Chicago, IL)
Est: $3,000 - $5,000
livestock in a sylvan field with stream, signed and dated indistinctly lower left: H.H. Cross 1880, oil on canvas laid to board, 42'' x 71'', est:$3000/5000
John Moran Auctioneers
Nov. 30, 2006
HENRY H. CROSS
Est: $20,000 - $30,000
AMERICAN, 1837-1918 MARCUS DALY'S CHILD OF THE MIST measurements 89 1/2 by 119 1/2 in. alternate measurements 227.3 by 303.5 cm signed H.H. Cross and dated 1892 (lower right) oil on canvas PROVENANCE Commissioned by Marcus Daly, Butte, Montana, 1892 Thence by descent to his daughter Derrold Slaven, Carmen, Idaho Sale: Sotheby's, New York, June 9, 1989, lot 269, illustrated Acquired from the above sale by the present owner NOTE In the early 1890s Marcus Daly, who had emigrated from Ireland in 1841, retained Cross to paint at his horse ranch in Montana. Child of the Mist, foaled at Newmarket in 1892, had been a highly successful racehorse in England before being imported to America in 1890. Daly commissioned this portrait to honor the horse's many successful offspring. The stretcher is incribed To Marcus Daly. Esq- H.H. Cross-Anaconda, Montana.
Sotheby's
Jun. 25, 2006
Henry H. Cross
Est: $1,500 - $2,500
Henry H. Cross Illinois/California (1837-1918) PORTRAIT OF NEGRO BOY oil on canvas, framed signed & dated: middle left, HH Cross, 1895 H27" W22 1/2" *Artist biography: Born in Flemingville, New York, Henry Cross became a noted painter of Indian portraits and racehorses. He was an adventurous person who ran away as a teenager several times to join a circus. At age sixteen, he traveled to Paris where he studied with animal painter Rosa Bonheur between 1853 and 1855. Returning to the United States, he earned a living painting animals on the sides of wagons and traveled West, again working with a circus. For the first time he saw Indians. His experiences during this time stimulated his interest in Western themes. In 1862, after having had a portrait studio in Chicago for two years, he moved to Minnesota during the Sioux uprising with the intent of painting the Indians President Abraham Lincoln had sentenced to death for the massacre of white settlers. During this period, he learned to speak the Sioux language, and Buffalo Bill Cody referred to him as "the greatest painter of Indian portraiture of all time" (Harmsen, WESTERN AMERICANA). Cross left a rich legacy of portrayals of Indian genre and their interaction with white military civilization. Among his subjects was a portrait of Sioux Chief Red Cloud. In the late 1880s, he began to paint Indian ceremonies and in the 1890s, visited Hopi pueblos in Arizona and painted the Snake Dance. The Gilcrease Institute of Tulsa, Oklahoma has one of the most comprehensive collections of his Indian portraits, and other collections are in the Chicago Historical Society and the State Historical Society of Wisconsin.
Charlton Hall
Feb. 14, 2006
Henry H. Cross American, 1837-1918 GLADSTONE
Est: $2,500 - $3,500
Henry H. Cross American, 1837-1918 GLADSTONE Inscribed, signed and dated From Life H.H. Cross/1890 and inscribed on the reverse "Gladstone" at 17 Months old/Painted from life/by H.H. Cross/July 1890 Oil on panel 15 3/4 x 22 inches (40 x 56 cm) Estimate $2,500-3,500
Doyle New York
Sep. 08, 2004
Henry H. Cross (American, 1837-1918)
Est: $2,000 - $3,000
Chief Dull Knife signed and dated 'H.H Cross 1877' (lower center) oil on canvas 24 x 20 in. (61 x 50.8 cm.)
Christie's
May. 27, 2004
HENRY H. CROSS 1837-1918
Est: $20,000 - $30,000
signed and dated lower right H.H. Cross 1892 oil on canvas, unframed
Sotheby's
Apr. 28, 2004
HENRY H. CROSS (1837-1918)
Est: $3,000 - $5,000
Sioux Indian under Attack signed and dated 'H.H. Cross 1862' (upper right) oil on board 12 x 16 in. (30.5 x 40.6 cm.)
Christie's