Spain
Isabella II bronze Proof 25 Centimos Essai 1854 PR64 Brown NGC, Cf. KM615.2. Plain edge. An extremely rare prototype for the business strike, this exceptionally brilliant pattern exhibits light brown surfaces, with and underlying iridescence and mirrored fields.
Ex. Pikes Peak Collection (Heritage 3015, September 2011, lot 25747)
Estimate: 2500-3500 USD