La Confederacion Argentina. 50 Pesos, ND (185x). P-S165s, CA-24s. Specimen. PMG Gem Uncirculated 65 EPQ.This does not have any written notations indicating that it was not in the last pair delivered. This is the rarest note in the set. Only two examples have been seen by the author with the other one privately held.PMG Gem Uncirculated 65 EPQ.