Dahlberg radio tokens
I picked up three of these zinc tokens in my collecting years. I don't think there is a comprehensive listing of all the locations that issued them, but the Token Catalog shows over 100 different. They were used in hospitals for bedside pay radios in place of dimes. Here's a blog with more info: https://coinsblog.ws/2020/07/pay-per-listen-radio-and-an-interesting-history.html
Does anyone else have some of these?