Help w/unknown counterstamp on 1723 Spain 2-reales? But since some other folks have piled on with theirs, I reckon I'll change the title and turn it into a general "Post Your Mystery Counterstamps" thread for everybody. (I certainly don't mind the pile-ons.) Sorry for the photos. I did the best I could. This coin is well worn with an old crease, but has an intriguing small counterstamp on the obverse (shield) side. This mark is an incuse scalloped rectangle with two unknown characters inside. (Perhaps two letters, or a crowned letter?) It is entirely possible I have the counterstamp sideways or upside-down in the pictures.