Hiere is an old die marked "400 Club" in an unusual style. Could be from anywhere, but there was a club by that name in Chicago mentioned in the Kefauver commission hearings in 1950:

These persons were charged with conspiring to violate the Federal lottery laws by distributing price lists across State lines. The Government interpreted pari-mutuel betting odds and racing results as lottery price lists and alleged these defendants conspired to decentralize Nationwide News Service .and take over its business through the formation of Continental Press Service of which Arthur McBride was then director. Western Union provided the technical equipment.

The second indictment alleged that four men, Frank J. "Chew Tobacco" Ryan, Hymie "Loud Mouth" Levin—I think that should have been Jack—Harry "Greasy Thumb" Guzik, the owners of the 400 Club at 29 West Randolph, and Maurice L. Goldstein operated an unlicensed radio-broadcasting station in violation of the Federal Communications Act in 1934. Specifically this broadcasting station was said to be a highly technical wire-tapping service, sending out radio signals.

The third indictment named Edward M. Dobkin, Cornelius J. Sullivan, James Rossi, alias James Ross, all Chicago gamblers, and charged them with receiving Continental Press News and distributing it from the Victoria Hotel to numerous bookies

Starting to crystalize pretty badly. Anyone want to preserve it for posterity for $15?