This coin is part of Mexico's Pre-Columbian Series, minted only two years 1992 in Proof only and in 1993 both BU and Proof. Oh, mistake made, it's a Brasero Efigie, I'm a poor speller my bad! There's a whole lot to this coin, including varieties, I'll leave a link on it. Top pic is the feebay Proof, next pics are my 1993, wish I would have bought the Proof but no such luck! Just sharing as I came across the below link from Mexican Numismatics, if you have any comments or pics feel free to post! https://www.ebay.com/itm/406893355692 https://mexicannumismatics.com/history/nclt/pre-columbian/aztec-1-oz
