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thanks Sap!
Is there a website for them?
Better late answering than never, I suppose.

I'm not aware of anywhere that's dedicated to these specific items. Keyrings are only very, very fringe exonumia; you won't find out too much about them on a coin forum. If you want more information, your best bet is to search through the two collecting fields this item is part of:
petroliana or petromania (those who collect all things petrol-related - old gas pumps, oil cans, that sort of thing) and keyring collectors - though I can't find too many people on the Internet who admit to being a keyring collector!
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis