Hi. Can someone tell me what kind of doubling this coin has on it? I'm not familiar with Mexican currency and just found this. Here are pics of the obverse and the reverse has the words "UN PESO", the date "1981" with closed 8, and a man facing left. Thanks.
I suspect this is die wear. See how the "X" in MEXICANOS has an outline all around the letter? Doubled dies are offset in a direction, and they show "notching" on letter ends--like in this picture:
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