I found this on line the other day. Thought it was kind of cool, it is a list of what all the different markings on ammo cans mean from different countries. The slide show has 14 pages pretty informative. Explains what the markings for China, Russia ,all the bigger surplus ammo supplies codes mean . Think they show eleven countries total.
ht tp://slideplayer.com/slide/6091134/
ht tp://slideplayer.com/slide/6091134/