There must be many of that yellow chip because I have seen it on eBay month after month from the same seller.

A seller (eBay) this week told me a smlkey mold with the single letter L on it came from Lansky's place, he would swear on it as he takes his money to the bank. They say anything to sell a chip. I would do exactly what you did when in doubt, post it on here and ask.