The whole internet collaborated and couldn’t find what this is. I’m not sure what this is, 50% of people don’t know too… The answer is in the link in the first comment.⬇
Ever stumbled upon an old-school gadget that made you scratch your head and go, “What on earth is this thing?” Well, that’s the vibe of the Vintage 1940s-1950s Can Opener – a real head-scratcher that even the mighty internet couldn’t crack. I’m telling you, 90% of us are in the same boat, playing the guessing game.
Source: lifestory25.com