1863 Mather and Shefferly Crockery Store - Detroit, Michigan store card. Token R-8, 5 to 10 known. Same example used on tokencatalog.com. There are a few little cuds at the top of the reverse.
Wow. Congrats. That is an extremely attractive token. Where does it place in the condition census for the variety? I'm assuming that with such a rare token, the known specimens would be catalogued somewhere (and I'm assuming, as with most things, many of them are low-grade or have problems). I don't see any obvious surface problems in your pictures, and would grade yours EF+ I always have to remember which Rarity scale is being used in each conversation. The Fuld rarity scale (which I'm assuming the OP is using), is, of course, different than the Sheldon scale that I'm most familiar with. When I see, R-8, I assume 2-3 known. It's funny how your background shapes your interpretation of the world.
I'm using the Fuld scale, because this is a CWT. R-8 = 5-10 known. Equivalent to a Sheldon R-7. This was the only picture of an example I can find online. As I said, tokencatalog.com uses the same coin. http://tokencatalog.com/token_recor...582&inventory_id=503422&attribution_id=481210 There is a MI225AX-2a variety which is Fuld R-3 (500-1000 known) and looks very similar. Don't get confused, this is the much rarer MI225AX-1a variety. Maybe it can be determined because of the die breaks? While researching this token I found out about the two people who made the token, which was some fascinating numismatic research.
Nice token. If you are not yet a member of the Civil War Token Collectors' Society, you should join. It's well worth the $18/year.