Maybe a new category?
Smells like, resemble's, could be, not 100% waterproof, non-confirmed. I don't know which term it should have?
But I would put them under the casino so If proof shows up they can be easily switched from category.
One could also put the know fakes in this catagory with the description fake.

After all, the chipguide is an educational website.

Like this one (my picture, not for CG), what is it? Fake, giftshop, trainingchip.

Jo