Answers by Expert:
I will answer your questions about encased coins (lucky pennies), which are advertising and event tokens with coins, unually cents, struck with the token.
Long time collector of encased coins and author of several articles on encased coins.
TAMS, ECI (Encased Collectors International)
TAMS -- several articles on encased coins, in particular the encased coins of the 1901 Buffalo Pan American Exposition
Casement -- many articles on encased coins