This one was a toughy. It took 3 of us to figure out the initials. Mason dies often print out phantom lines on certain initials. It can actually be read both ways and make sense. This one was the toughest one yet, to read. Could have been several letters. IDCL to name a few. BTW, I was the last one to agree it was an I and the last letter, not the 1st letter.
DMI delivered to
Allie Kiddie
Des Moines, IA
1931
Read on. It went to the "Fifth Avenue Cigar Store"
DMI=Des Moines Iowa
Below articles gives you information about the type of gentlemen involved with illegal gaming across the USA after prohibition ended and the "Era Of The Illegals" started and ended 1932-1951, some continued until 1961 but few compared to how many Estes Kevaufer closed in 1951. The bootleggers needed a way to continue the cash flow. These stories can be found all across our country.
Without the history, they are only "Little Pieces Of Clay."
Ames Daily Tribune, 23 Nov.1931:

Mason City Globe, 8 July 1936:

Thank you to all involved in attributing this chip. True friends of our hobby.