imagineero
Addicted to ArboristSite
It's a V- Gouge for wood carving. It is meant to be hit with a mallet or pushed by hand. It is for carving out scoops of wood that have an angled bottom. They are nice for carving the detailed textures of hair or foliage in wood sculptures.
+1
I'd guess part of a hand carvers set? You see smaller versions of these all the time (much smaller) that people use on caulk/rubber blocks for printing. A pretty specialised tool to be sure, take care if you regrind it. Don't go putting it on your bench grinder etc, use a low speed water cooled grinder with precision jigs like a tormek. If you can't justify the cost then pay someone else to do it, I charge about $7 to regrind something like this. You'll totally destroy the temper on the metal if you do it on a grinder, and end up with an edge that will neither be sharp nor true.
Can't say on the log, looks like a bugger to mill up the skinny end with all those knots though!
Shaun