Hammer Brand Imperial Serpentine Jack Copper Pearl switchblade knife

Vintage Hammer Brand Serpentine Utility Jack switchblade made by the Imperial Knife Co of Providence, RI in the 1950s and was designated the model JM98PB. The knife measures 3.5 inches closed and 6 1/4 inches open with steel liners. The blade is marked HAMMER BRAND USA with a picture of an arm holding a hammer and the back is marked with two patent numbers ending in 37 & 82. The blade is 98% full and shiny with some spotting. The handles (scales) are hollow steel with celluloid wrap in Copper Pearl. These more interesting colors were used in the late 1940s, early 50s and are fun to collect. The wraps are in nice condition with minimal shrinkage. The knife works GREAT with the blade tip seating deep when closed, strong snap and locks open with about 1/16 inches movement at the tip. Does rattle if shaken with blade open as most of these do after years of use. 100% money back guarantee including return shipping if you're not happy with this knife! Safety is marginal. VG+ condition.