Mexican Ferrocarril silver. Not the Southern one.

Hey guys, i've been trying to find out about this coin I saw that this site had a pretty friendly community so i decided to give it a try.

I haven't been able to find much on this coin, although there seems to be a similar one. The other one is a 1950 southern railroad coin and has text around the train on the back.

This one has and eagle on the front and Doz Onzas Ley .999 Plata Pura on the top, and AMC on the bottom. On the back it has the train and Ferrocarril