I would appreciate it very much if someone on this list could provide information as to the manufacture and collecting of the modern day jetons that are distributed as "doubloons" during Mardi Gras parades.

I sell a book called "Doubloons Commemorative Medals" by Jerry Ledet Sr. I don't know if it is updated every year - mine is a 1994 edition. It is basically a listing, not illustrated, of the doubloons along with a couple of other items.