Brazil
João Prince Regent copper Proof Pattern 960 Reis 1809 PR64 Brown NGC, KM-Pn12, LMB-E012D, Gomes-E2.04. A beautiful example of the type, perhaps even a bit finer than its near-Gem grade suggests, with surfaces that appear without mark, are impeccably detailed and display pleasing brown patina, with only subtle variations in hue over both sides. An intriguing issue, we offered a very well detailed account of its origins in our only previous offering of the type. We wrote:
Past publications by late Richard Doty ("The Soho Mint & the Industrialization of Money", London, 1998) and Frank Gilboy ("Misadventures of a Mint - Boulton, Watt & Co. and the "Mint for the Brazils" in British Numismatic Journal, vol. 60, 1990) give detailed information related to the present fascinating issue. In July of 1808, the Boulton & Watt company received a letter from one Manuel Antonio de Paiva requesting an estimated cost to "deliver a coin mint to the 'Brazils' and to provide technical support from British operators", including the means to "overstrike coins similarly to what had been done in Great Britain for the Spanish Colonial 8 Reales." As a result, and undoubtedly to provide a sample of the coins to be produced, a series of sample patterns dated 1809 were minted in various metals. All are rare and highly sought after, with only a handful of silver pieces known in any grade, and the copper pieces conditionally very rare in higher preservations.
Estimate: 7000-9000 USD