Hammer Brand Imperial Toothpick Silver Pearl & Red 1950s vintage switchblade

Vintage Hammer Brand toothpick style switchblade made in Providence, RI in the 1950s by the Imperial Knife Co and designated model #JM-90-PBC. This knife measures 4.25 inches closed and 7 1/2 inches open and has steel liners. The scales are hollow metal wrapped in Silver Pearl Red swirl celluloid. The blade is nearly full and shiny with some light scratches and is marked Hammer Brand USA on the front with a picture of an arm holding a hammer. The back is marked with 2 patent numbers ending in 37 & 82. The knife works well. Blade tip seats deep, opens fully and locks up good with just a little movement each way and doesn't rattle if shaken when open. Nice old American fisherman's switchblade. Safety works. EX condition.