90% Silver Trade Dollars
Some content
Obverse
Reverse
see other side| Trade Dollars | |||
| Nationality: | USA | Fineness: | 90% Silver |
| Years Minted: | 1836-1873 | Diameter: | 38.1 mm |
| Unit Face Value: | $1 (USD) | Thickness: | 3.1 mm |
| Roll Face Value: | $20 (USD) | Silver Weight: | 0.77344 oz |
| (roll = 20 coins) | (27.2 grams) | ||
| Designed by: | William Barber | ||
| Composition: | 90% silver / 10% copper | ||
| Mints: | Philadelphia / Carson City / San Francisco | ||