Clad Washington Quarters
After initially being produced in a composition of 90% silver for more than 30 years, the composition of the Washington Quarter was changed to copper-nickel clad starting in 1965. This change also occurred for the dime, and the silver content of the half dollar was lowered. For the first three years that clad quarters were issued, no mint marks were used to prevent hoarding. In the following years, the Denver Mint would use the “D” mint mark and the San Francisco Mint would use the “S” mint mark for the proof issues produced there. The Philadelphia Mint began using the “P” mint mark on coins starting in 1980.
Clad composition Washington Quarters consist of an outer layer of 75% copper and 25% nickel, bonded to a core of pure copper. This yields an overall composition of 91.67% copper and 8.33% nickel.
Clad Washington Quarter Coin Specifications
| Dates: | 1965-1998 |
| Mints: | Philadelphia |
| Denver | |
| San Francisco | |
| Composition: | 91.67% copper |
| 8.33% nickel | |
| Weight: | 5.67 grams |
| 0.18 ounces | |
| Diameter: | 24.26 mm |
| 0.96 inches |
