That clears things up very nicely. On the obverse the crowned symbols of Burgundy: a fire iron, a "Burgundy cross" and the order of the golden fleece, on the reverse THS, which, I suspect, should have been IHS (Jesus) - see description of D 1015.
My speculation is that a Northern Dutchmen didn't like the Burgundy symbols, since they represented the hated Habsburgs in the South. However, he didn't want to throw away a good counter, so he obliterated the enemy symbols. I am not sure what the initials T G and T D stand for, but they apparently offended our thrifty hammerer also.
Peter