Interesting knife to say the least with a Karambit Blade that has two positions which opens to a 45 and 90 degree angle to the knife body. The Spokeshave Blade or Draw Knife Blade has 4 Positions and opens fully. The Saw Blade has 3 Positions and is a monolithic constructed blade that's 1/32" Thick. Tireless Research has yielded no definitive answers as to the maker or intended use. Area's researched included, Wheelwright's Knife, Post and Rung Chairmakers Knife, Barrel Maker's Knife, Cooper Knife, Shipwright's Knife, Cobbler's Knife, Spokeshave Knife, Leather Workers Knife, Gunsmiths Knife, Clockmakers Knife,Flooring Knife, Mushroom Knife, Cane Makers Knife, Chair Makers Knife and the list continues. If anyone has any information about this mystery knife please chime in. It measures 5-1/2" Closed and has endless uses.