Last week I bought this keyhole saw because it had an unusual handle, with the front fishtail having an extra curl. (I sort of collect different saw handle styles) On closer inspection I think its probably a cut down handle from a full closed grip lamb's tongue style handle (there's the typical notch found on the underside of the grip just before the curve reversal to the lamb's tongue; the end of that fishtail is a bit stubby rather than tapered to an edge; the underside of the handle boss is flat and looks out-of-place with all the other curves) The split nuts are very small, 3/8" across the head, so I think the original handle likely was made for a small saw such as a keyhole saw (but maybe not for the current blade?) No markings found I quite like it, even if it is a frankensaw, and it fits in with my other keyhole saws which show a wide variety of handle styles. (pictures show this saw alone or with 3 other recently acquired saws, and an old display mounted in a picture frame that I made a few years ago to show my different keyhole/compass saw handle styles )