IMPERIAL USA Jackomatic Jr Keychain Switchblade 1950s knife with chain

Vintage Imperial keychain switchblade with Burgundy pearl with black streaks celluloid wrapped handles made by the Imperial Knife Co of Providence, RI in the 1950s and was designated the model JM96PB. It came with a beaded chain to attach keys, etc. The knife measures 2.25 inches closed and 3.75 inches open with brass liners and nickel silver plated button & safety. The blade is stamped IMPERIAL USA with two patent numbers on the back ending in 37 & 82 that are hard to see. The blade is 100% full with some light scratches. The Burgundy pearl (faux pearl) with black streaks celluloid scales are in excellent condition. The knife works well with the blade tip deep closed, opens fully and tight lockup. Safety does work. EX+ condition.