David Hockney (born 1937) “Peter” (Peter Schlesinger) Ink Signed, inscribed ‘Powis Terr’ and dated ‘Sept 1967’; inscribed ‘Powis Terrace’ on a label verso 19.5” x 12.25” (49.5 x 31.1cm) Provenance: Kasmin Limited, London (DH0328); Given as a gift by the artist to Brian Sack (between 1967-1971); Sack collection £30,000-£40,000