Old Mint
Within the first year of its operation, the San Francisco mint turned $4 million in gold bullion into coins. The second building, completed in 1874, was designed by Alfred B. Mullett in a conservative Greek Revival style with a sober Doric order. The building had a central pedimented portico flanked by projecting wings in an E-shape; it was built round a completely enclosed central courtyard that contained a well—the features that saved it during the fire of 1906, when the heat melted the plate glass windows and exploded sandstone and granite blocks with which it was faced. The building sat on a concrete and granite foundation, designed to thwart tunneling into its vaults, which at the time of the 1906 fire held $300 million, fully a third of the United States' gold reserves. Heroic efforts by Superintendent of the Mint, Frank A. Leach, and his men preserved the building and the bullion that then backed the nation's currency. The mint resumed operation soon thereafter, continuing until 1937.
In 1961 the Old Mint, as it had become known, was designated a National Historic Landmark. It also became a California Historical Landmark in 1974.
The given name of "The Granite Lady" is somewhat of a misnomer as most of the building is made from sandstone. While the base/basement of the building is made of granite, the entire external and upper stories are made of sandstone. The Granite Lady was a marketing term given in the 1970s that stuck.
The Old Mint was open to visitors until 1993. In 2003 the federal government sold the structure to the City of San Francisco for one dollar—an 1879 silver dollar struck at the mint— for use as the Museum of the City of San Francisco. In the fall of 2005, ground was broken for renovations that would turn the central court into a glass-enclosed galleria. In 2006 Congress created the San Francisco Old Mint Commemorative Coin, the first coin to honor a United States mint (Pub.L. 109–230). The Museum was scheduled to open in 2012, but the Old Mint is used for special events, some open to the public, prior to the Museum's official opening.
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