»Tri-Color
Camera »Jos-Pe« (No. 325), 1924
Josef-Peter Welker, Hamburg. All-metal camera for single-shot
3-color
separation negatives. Size 9 x 12 cm, Cassar 1:3/210 mm.
Estimate: 2,000/3,000
US$ 3,100/4,650
Reserve: € 1,500/US$ 2,330
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