I'll try to help--I know a
few things about IHCs
Your 1862 IHC was the earlier copper-nickel composition, which had a considerably thicker planchet over the bronze coins first issued in 1864. It's normal for that year, although I'm not sure why they were thicker; it may have something to due with the copper-nickel being a harder material to strike. That's a nice example! I would grade your coin EF40-45.
