An exhibition-standard 19th-Century nickel-plated chain saw,

细节
An exhibition-standard 19th-Century nickel-plated chain saw,
signed COLLIN & CIE, the chain held by two blued-steel thumb screws to the curved arm, with supplementary arm pivotting around a blued-steel screw, with reeded ebony handles fitted with gilt ferrules -- 11in. (28cm.) long

See Front Cover