Variety equivalents:
Adams-Woodin 1219
Judd 1240
Pollock 1382

Rarity: Unique

Designer: William Barber

Diameter: 21.6 millimeters

Metal content:

Weight: 129 grains

Edge: Reeded

Images courtesy of Heritage Numismatic Auctions

Known examples (1):
Ex - William Woodin - Farouk, sold for 300 Egyptian Pounds (the equivalent of $861.00) - Dr. Wilkison - purchased in 1973 by the Paramount International Coin Corporation - Trompeter - Superior Galleries - Heritage

Sources and/or recommended reading:
David Akers, "United States Gold Patterns"