both rare, (see introduction for note on general condition of this consignment) (2) (lot) " /> Medellín, Banco Mercantíl de Medellín, 50-Pesos, 187-, farm tools in field at upper center (2, both unlisted in Pick), proofs, one mounted on card, both rubber-stamped "SPECIMEN" in lower right signature area, <I>both rare, (see introduction for note on general condition of this consignment) </I> (2) (lot) | Christie's