Watch List notes:

ISABEL II (1833-1868). 100 Reales. (Au 8.36g / 22mm). 1851. Sevilla. (Cal-2019-793, listed as RRR). Very Fine. Rare and probably unpublished. We only know two copies, one of them, with the 1851/0 rectification, auctioned by Cayón on 04/09/2021 in his monographic auction dedicated to a collection of Isabel II, which was awarded for \u20ac 21,000. The other specimen that we know of has the 1852/1 rectification, which was auctioned by Aureo & Calicó on 04/28/2011 in its auction dedicated to the "Anastasia de Quiroga" collection, which was awarded at \u20ac 11,000. The specimen that we present in this auction is not included in two of the most important collections dedicated to Elizabeth II, so we conclude that it could be an unpublished piece also taking into account the argument provided by the collector.