I'm guessing most were simply binned. I think they look cool, as I'm into vintage, but as others have said, a real pain to play around.
A neat trick (if anyone is interested) if you want to "age" chrome parts, which I've used on new parts as well, is to rub the chrome lightly with a scourer pad (with a tiny bit of WD40) to remove the very thin layer of chrome, to reveal the duller metal beneath. Then put the now de-chromed parts in a smallish box part full of nails and screws (rusty screws are best) and shake vigorously, the more you do it, the more little nicks and marks are made on the parts which genuinely looks like they have been bashed about for a number of years. The longer you shake the box, the more "aged" the parts look.