Argentina (Buenos Aires)
Buenos Aires, Argentina, copper 5/10 real, 1830, NGC AU 58 BN, ex-O'Brien.KM-3; Janson-11.7.Very lightly handled with some speckles of original red luster, rims a bit crude as made.Pedigreed to the John O'Brien collection (stated on label).
Estimate: 80-120 USD