| Boris Ignatovich Regulators for Trams 1930s (taken) 1950s (print) Gelatin silver print 11 1/2 x 7 3/4 in (29.2 x 19.7 cm) Phillips de Pury - New York Courtesy of Phillips De Pury - NY (31 Jan 2008, Lot 117) LL/27368 Annotated in ink and pencil in an unidentified hand on the verso.
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