They used to sell a .22 pistol identical to this by mail order with advertisements in the back of magazines. These were dirt cheap, and no manufacturers name was mentioned.
I ordered one but my money order was returned a few weeks later with a note saying they could no longer garantee delivery.
I have a relic break top .38 without the cylinder that has the same sort of stamping on the top strap. Near as I can tell its a Spanish made copy.
This may be a foreign made copy or it may be a pistol sold through a hardware store chain, much like the Sears marked rifles manufacturered by name brand companies.