1970 Mexican Agriculture Medal

Evidently produced by the government at its Mexico City mint. Undenominated, and the only references to it I've found don't shed much light on the reason for its issue or the circumstances under which it was distributed, also no mintage quantity given, and only state they're silver without specifying the purity.

39.6mm in diameter, weight just under 27.2 grams. Plain edge. Very high relief strike, so much so that stacking them would not be a practical proposition. It certainly can't be crammed into an Air-tite.





I suppose I could determine its specific gravity to get an idea regarding its composition, but I'd think that information has to be out there somewhere.