| Klaus Behr Portrait of David Hockney 1995 Gelatin silver print, hand-coloured 23 x 29 cm Bassenge Photography Auctions Auction (17 June 2009, Sale 93, Lot 4425) LL/32515 Signed and colored by David Hockney on recto; signed by the photographer in ball-point pen and annotated in pencil on the verso.
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