Danish West Indies
Danish Colony - Frederik VII Proof 10 Cents 1859 PR63 ANACS, KM66. Scarce in this special format, with tone on the reverse that would often be labeled "Environmental Damage" by today's standards due to its uniform darkness.Note: Fully mirrored specimens such as the present are typically referred to as "prooflike" strikes by collectors.
Estimate: 400-600 USD