That's interesting. I as well found a set of dentures once, it did freak me out a little. House dated to early 1700's. Mine is a full set, top and bottom. The metal on mine appears to be silver and the teeth are definitely porcelain. Dug them about 14" deep. Almost like someone buried them. Rinsed them off with water and they are as shiny as the day they were put in the ground. Just reread your post, mine are quite small as well.