Lot Essay
When rotated to one of three positions the device gives a pair of pinholes, single pinhole or no pinhole
Details
Single/stereo pinhole
brass, with pivoting front engraved STéNOPé PHOTOGRAPHE. BREVETé S.G.D.G. PARIS, mounted on a wood panel
brass, with pivoting front engraved STéNOPé PHOTOGRAPHE. BREVETé S.G.D.G. PARIS, mounted on a wood panel