France
Republic gold Proof Essai Centime 1875-A PR65 NGC, Paris mint, Maz-2219 (R4). A very rare pattern issue, the only auction record we can locate for this type was when this coin originally sold, in October, 2011, for a hammer price of 6,000 GBP (about $9,300 at the time). Aside from that, there have been no other examples sold at major public auction in at least a decade. Numerous die polish lines are noted in the fields, but very few post-striking blemishes are seen. Objectively, this is a very attractive 19th century French gold proof essai, but the fact that it is excessively rare only adds to its appeal.
From the Burford Collection
HID02901242017
Estimate: 8000-10000 USD