(see introduction for note on general condition of this" /> Argentine Confederation, 1-Peso, plow and farmers in wheat field at upper center (14, all P.S.161), proofs on card, six single notes, four two-subject sheets, all examples rubber stamped "SPECIMEN" in signature area, several examples dated "June 13th - 15th, 1855" in pencil, <I>(see introduction for note on general condition of this | Christie's