i have what appears to be a gold coin from mexico, however, I don't know anything about it other than my dad purchased it in mexico in 1967. I know there was a boon of fake/replica coins available then, so I think this one may fall into that category. it's 10.5 mm, and sadly I don't have a scale to weigh it. also, the edge is reeded. any info about it would be great.
