I was wondering if anyone knew of known errors on the Mexican 1 $ (peso). A friend found, and gave me 43 Mexican 1$ with dates 1981 - 1984 through 1987.
Of all of these, I found 1 obverse doubled 1$ and 1 rev. doubling, and 1 obv. $ shifted significantly.
I couldn't find anything about the collectability of these, and I am not at all familiar with foreign coins.
Any thoughts, comments, or suggestions about this subject?
Thank you in advance.