Lot 524: Colin Hall, British b.1952- ''Shall we disconnect the telephone...?''; collage with charcoal, pastel

Colin Hall, British b.1952- ''Shall we disconnect the telephone...?''; collage with charcoal, pastel, ink and acrylic, signed, titled and dated Sept 1980, 81.5x61.5cm: Colin Hall, British b.1952- ''Quick! Where are the Keys?''; ink, pen, acrylic, collage with mixed technique, signed, titled and dated '80,56x72.5cm, (2), (may be subject to Droit de Suite)