Stack N Smack Pogs Milkcaps Vintage 2-Metal International Kap

Vintage Case of International Kap Pogs/Milk Caps It comes with 2 metal caps, 2 thick plastic caps, 35 hard cardboard pogs, a Center game pc and instructions to 9 different games. all in a plastic carrying case. I do not know much about this set I do know that the center piece has wear and tear on the back. See Pic. Please know that these have been played with and are used, but in good used condition.