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VINTAGE BRASS MOUNT ONLY 12in/1:8 ROSS LONDON No 6118 4 HOMOCENTRIC LENS AS-IS
Antique brass mount without lenses, stamped on the back: PATENT 12IN HOMOCENTRIC 1:8 THE ROCHESTER OPTICAL & CAMERA CO. SOLE AGENTS USA. Stamped under the sliding aperture knob: No 6188 4 . ROSS, LONDON. There is some residual lacquer on some of the brass that resisted polishing.
