It has no denomination or lettering, so it is a token. From a bit of research, it appears to be from a token designer, Van and Brook: https://vanbrooktokens.com/availabletokendesigns.htm#generalpurposetokendesigns look at General Purpose Token designs #836 and #1521
I believe this is made by a company named Van Brook tokens. They make tokens for small businesses that use coin op machines; car washes, in particular.
I looked. I keep these types of exunomia items in different boxes. So far I found 2.. I might have given some to my daughter for her collection