From the appearance of the fields in your scans, it's likely you have either proof-like tokens or proof tokens. FM made both in 1966, in addition to the casino run tokens used in the slot machines. Design is the same on all.

The proof-like tokens are made in Franklinium II and the Proof in the collector albums were a silver-clad construction. After 50 years, the silver clads are almost always toned (at least around the periphery) unless they have been cleaned (dipping, usually). Few of the full Proof sets have been broken up so most of the singles you see at dealers are proof-like.

To further complicate things, some casino ordered individually packaged presentation proofs in the same material as used in the casino. Since both proof-like and proof strikes are extremely detailed, once removed from the holders it's almost impossible to tell the Franklinum II strikes apart.

There were 500 of each type of proof token made for sets, and about 3000 of the proof-like versions.

I don't think I've ever seen a silver-clad 1966 out of the album. Since they sell for only about $10 a token in compete sets, there's not a lot of incentive to break up the silver-clad proof sets. I think they should be worth more, but there needs to be more token collectors for that to happen. I've had my sets for 40+ years and they are worth only a little more than I paid for them in the 1970's.

The individual proofs and proof-like coins in Franklinium-II sell for maybe $5 each. Since there are a lot of nice uncirculated FM tokens from 1966 around, any that show use have almost no collector value. Also, the casino run tokens were made in large quantities, usually at least 10,000 per casino.