19th Century Plate Cameras Shutters, mahogany pneumatically-operated velvet-covered flap shutter stamped 'Cadett's Patent /Marion and Co, 22 and 23 Soho Square, London', 140mm wide, with clamp for attachment to lens at back, circa 1878, similar to Guerry type, F, some screws missing, rubber perished, spring broken; and brass pivoting double guillotine shutter, incomplete; (2)