> So the counterfeiter must have molded the entire slide (complete with the company logo that was embossed into the slide itself) thing is that company was dissolved back in the 80’s.
I have a simpler explanation for that. Someone bought the tooling (injection moulds?), in an auction maybe, didn't bother to change the brand and is out there manufacturing slides.
It's not "counterfeit" per se they just didn't give a f. (to use the technical term) and are selling it. Maybe outside branding is theirs but not the plastic one.