Designer: Obverse by Gilroy Roberts; reverse by Frank Gasparro
Diameter: ±30.6 millimeters
Metal Content:
Outer layers - ±80% Silver, ±20% Copper
Center - ±79% Copper, ±21% Silver
Weight: ±178 grains (±11.5 grams)
Edge: Reeded
Mintmark: "S" (for San Francisco) centered above the date