Last of the Washington quarters before the introduction of the 50 State Quarters, Districts and Territorial Quarters, then the America The Beautiful series.
The San Francisco Mint continued minting proof specimens in the normal clad and the silver alloys as part of their increased marketing effort to sell more coins.
Mintage:
Philadelphia | Denver | Clad Proof | Silver Proof |
896,268,000 | 821,000,000 | 2,086,507 | 878,792 |