antique jeweler's metal cutting saw, workbench tool cast iron w/ replaceable saw blade

Early industrial vintage jeweler's workbench saw... a cast iron frame with replaceable blade. This measures 13 1/2" long overall and the blade is 9" long and is held in place by a pin near the handle and a cotter key at the tip.

This has some rust and the remains of a black japanned enamel finish.