Hello #1 1981 $20 Coin with images #2 1980 Mexican coin with images of a 1935 Arkansas Centennial type coin on it. Please help see photo albulm:hatch::hatch:
I googled 1980 $20 peso (both pictures you show) and came up with several images that look identical to what you are showing. Makes me wonder if there is an error then.
I don't see anything, but it's not unusual for people to squeeze/hammer two coins together and impress the image of one upon the other.
Glad I am not the only one not seeing anything. I thought I needed new glasses there for a minute. lol.