I didn't want to get into it, but yes someone could make repair molds and partials to re-mold the designs.

Making a new label for the center isn't a problem anymore with computers. Stippling it into the center would make it undetectible. (almost)

Using specific RTV compounds it's possible to make a mold so good that I copied a 45 and then poured epoxy to make a copy in that mold. It played fine. Considering how fine the grooves are in a record, that means, blank chips would be easier to replicate. That's 20 year old basement games...

As for UV if the maker is using old real chips, ground and re-molded, it would be identical. True, if any glue is used or there is any line where the work was done, it might be exposed.

I don't wish to give the fakers any better ideas.

But if they match the UV, there are still other ways. It just starts getting more and more expensive to detect, so the conclusion I've come to is that if someone is good enough and careful enough, I think they could make an _almost_ undetectable, restored, repaired, or complete reproduction of any chip. For that matter, someone could make an entire new, one of a kind, chip.

I'm too busy with other things, but I'd say, it would take an artist and some dedication to make the fake.