PRESTO M2 Bone WWII vintage Paratrooper automatic knife

PRESTO M2 WWII vintage bone handled automatic knife. This knife was made by the George Schrade Knife Co of Bridgeport, CT sometime between 1930 and 1941. It measures 4 1/8" closed and 7 1/8" open with steel liners, bolsters, bail, safety & button. The blade is marked PRESTO over MADE IN USA on the front and GEO SCHRADE over BRIDGEPORT over CONN on the rear. Blade is nearly full with some of the original finish visible with a few light scratches under some patina and light spotting. The scales are very nice with no cracks or chips with lanyard ring (staple). There are some black spots on the front scale that I think could be cleaned off, but I'm selling as found. The knife works well with blade tip deep and centered, strong snap and nice lockup with very little movement. Issued to troops during WWII by the US government. Safety works. EX- condition.