I'm making a project to make these kinds of counters like the old battlesystem box had. I first saw them on eBay, not knowing where they were from, and after a bit of research discovered their origins.
These ones here are a basic clone of one of the human counters, renamed to the OD&D/Chainmail troop type. I've made a few with other weapons than swords, but they aren't in counter sheet form yet. This sheet is B/W only for ease on printers. Just print (centered), glue to cardstock, and cut along the lines.