Thought it might be French colonial, but didn't spot it in Gadoury. Size 25mm across shoulders, 3.00gm.
Found another similar but the info does not help http://www.eric-collections.com/94-75-centimes-pentagonal-uniface-en-laiton.html
Thanks for the direction on this. I've seen very few French jetons and didn't realize how inexpensive they are. It came from a dealer in beads and artifacts in Africa so I thought I had some wonderfully rare African colonial token. Boo hoo.