Variety equivalents:
Adams-Woodin 1224
Judd 1235
Pollock 1377

Rarity: Unique

Designer: William Barber

Diameter: 20.5 millimeters

Metal content:

Weight: 77.4 grains

Edge: Reeded

Images courtesy of Heritage Numismatic Auctions

Known examples (1):
Ex - William H. Woodin - Farouk, sold for 220 Egyptian Pounds (the equivalent of $631.40) - 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"