I agree on the possibility of it being like a silver strike and two pieces. The flat center and the beveled edge. because of the beveled edge I would say 100% it is not a slot token. No machine I know of was or is set up for a odd shaped token. And as mentioned, no mint marking though I believe I have seen a few without a mint marking. And "all" the $100 tokens I have seen or own have either gold with silver or are made of just silver. Even the Binion's Horseshoe $100 that is constantly on eBay is gold inlay even if over a bi metal. Somewhere I heard Nevada Gaming required precious metal be in $100 and above tokens. (I could be wrong on that). His thingy has zero precious metal in or on it. I would not want it in my token collection.