The Sovereign in REA is the third Sovereign that I've seen of the double struck Anderson. With the ones posted in this thread there are 8 Piedmont double strikes that I know of. I've seen a few of the "damaged" versions with the O or D in providence with different degrees of damage and they are also found on Piedmont's and Sovereigns.
I picked a double struck Piedmont and Sovereign a few years ago.
img623.jpg
img624.jpg