Regarding the Schulte (PIEDMONT 350)....this card was in Joe Pelaez collection back in the early 1990's.
So far, it is "unique", as no other one has been discovered. I think it is simply a printing oddity.
And, until this Schulte is found with an EPDG back, it cannot be considered as part of the Elite 11 group.
TED Z
T206 Reference
.