Nice Coupons there...On Rhoades populations, as you say the MET has one online from Burdick...
www.metmuseum.org/art/collection/search/417937
Also, SGC's pop report shows 2 examples of Rhoades.. an SGC 3 and 1.5.
GFG had a raw one that could be the SGC 1.5, or maybe it's still raw.
I've had a lot of help from board members to get to 67. I still have lots of other want-lists going to keep me busy.