PRESTO Hawkbill Black wormgroove Vintage automatic knife

PRESTO Hawkbill Black wormgroove Vintage automatic knife made by the George Schrade Knife Co sometime between 1940 and 1955. The knife measures 4 1/8 inches closed and 6 7/8 inches open with steel liners and bolsters with nickel silver button and safety. The hawkbill blade is mostly full, about 95% and shiny and looks to have been lightly cleaned. The tang of the blade is stamped PRESTO PAT JAN 30-40 MADE IN USA front and GEO SCHRADE KNIFE CO INC BPT CONN rear. The black synthetic wormgroove scales (handles) are in good condition and a little dull, but no cracks. The knife works well with the blade tip deep in the well closed, good snap and average lockup with about 1/8" up and down at the tip.  Does not rattle if shaken when blade is open. Safety works. VG+ condition.