Jennings Arcade Or Slot Keys

I have found another ring of jennings keys. No idae what they are for, they say o d jennings chicago on them. Three are 20 keys #1545-2700x2-2131-2038-2420-2880-2877-2316-2600x2-2136-1904-1755x2-1988-2106-2049-1811-and one shorter in length i can't make out the #someone has stamped 302 on it. eKys are yale.

Selling all for higest bid. Thanks for looking. From smoke free home on old rt. 66 insurance advised.