I got these in 2006 from Spragg as UFC's. Never looked into them nor made the connection. I believe he has more for sale.

Undeniable proof has been obtained proving the history of the chips. Dewey D'angelo was the operator. Many other names from police files on the Dixie Mafia were involved with Dewey’s Club and other illegal’s in Biloxi. Like most illegal’s they used devises to give them edges in gambling. See my Arrow Head Inn articles.

Dewey’s Club operated in Biloxi early 1960’s. It was closed by authorities.
Sometime between 1962 & 1965 it reopened as The Red Carpet. Red Carpet chips are shown in my articles.
In 1999 I wrote a series on Biloxi illegal casinos. Here is the link.
http://www.marlowcasinochips.com/links/genetrimble/genetrimble.htm

From Part III of the articles:
The owners of the Red Carpet were Harry Bennett and Dewey De'Angelo. The "Juice" was brought to Biloxi from Oklahoma by Jimmy James and installed in 1960. The Red Carpet closed in 1962. All three men involved met untimely deaths. Harry was shot down in front of his apartment right on the beach. Dewey was found in the trunk of his car also with gunshot wounds but I doubt he died a quick death. His ear had been cut off and stuffed in his mouth. My guess is Dewey was bending the wrong ears with too much information. Jimmy also met an assassin's bullet. The deaths are well documented in the Biloxi papers and had more to do with drugs than the ripping off of a few crap shooters at the Red Carpet. There is a lot of speculation on whether the Dixie Mafia did in fact exist, as an entity. If there was such a thing as the Dixie Mafia it was not very forgiving in 1962, per the newspapers of the day.
I should have made the connection and researched further in 2006.
Some of the dates in the new research is a little off when compared to Rip Poulos's info in my articles. Rip was going from memory.