Pig Sticker?
William Duffield on the Cohansey
>This is the first of three tool query posts that I have gathered to entertain you this evening. Don't miss the second and third items. I assure you, things can only improve from this point.
Does anybody recognize this, or any part of it? The blade is brass or maybe bronze, cast and machined, with three equally spaced ribs (120� apart) and concave grooves between them. The handle is hardwood, with that particularly obnoxious red stain, and the extension/connector in between appears to be black iron.

Our suspicions are that this is not even a woodworking tool, but it might be a carving tool :^) We further suppose that it may have been made up of disparate parts, a "marriage of convenience" perhaps? At least, it is a tool of some sort, and it is not of relatively recent manufacture.