La Confederacion Argentina. 5 Pesos, ND (185x). P-S162s, CA-21s. Specimen. PMG Choice Uncirculated 63.The handwritten note in the upper margin indicates that this note was prepared on 1 April 1855 and that it is from the fifth double plate. Previously Mounted which is noted on the reverse of the holder.PMG Choice Uncirculated 63.