129. 'Champion' Guillotine Shutter, c. 1850

Signed: '"THE CHAMPION". LONDON STEREOSCOPIC CO 106 & 108 REGENT St w 960 bTE S. G. D. G.'.

Self-capping spring-loaded two-plate guillotine 'go-and-return' shutter with P and I settings; adjustable spring tension on scale calibrated 1 to 6; lens aperture 35 mm.

Length 100 mm, width 60 mm, depth 20 mm.
Inventory no. 91,695.