For the second commemorative coin program of 2006, the United States Mint paid tribute to the San Francisco Old Mint, celebrating the instrumental role it played in the recovery and rebuilding of a great American city.
On June 15, 2006, President George W. Bush authorized the production and release of two commemorative coins to honor the history and legacy of the building that became known as the “Granite Lady,” in this, the 100th anniversary of the terrible tragedy which befell San Francisco in the spring of 1906.
Both coins were available with proof and uncirculated finishes. A proof coin has a brilliant mirror-like finish. The term “proof” refers to a specialized minting process, which begins by manually feeding burnished coin planchets into presses fitted with specially polished dies. An uncirculated coin has a high-quality, satin finish and is produced with special care.