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Philadelphia Mint

The Philadelphia Mint is a branch of the United States Mint in Philadelphia. It was built in 1792 following the Coinage Act of 1792, in order to establish a national identity and the needs of commerce in the United States, and is the first and oldest national mint.

The Coinage Act of 1792 entered into law on April 2, proclaiming the creation of the United States Mint. Philadelphia at that time was the nation's capital, and the first mint facility was built there. David Rittenhouse, an American scientist, was appointed the first director of the mint by President George Washington. Two lots were purchased by Rittenhouse on July 18, 1792, at Seventh Street and 631 Filbert Street in Philadelphia for $4,266.67. The next day, demolition of an abandoned whiskey distillery on the property began. Foundation work began on July 31; by September 7, the first building was ready for installation of the smelting furnace. The smelt house was the first public building erected by the United States government.

A three-story brick structure facing Seventh Street was constructed a few months later. Measuring nearly 37 ft (11 m) wide on the street, it only extended back 33 ft (10 m). The gold and silver for the mint were contained in basement vaults. The first floor housed deposit and weighing rooms, along with the press room, where striking coins took place. Mint official offices were on the second floor, and the assay office was located on the third floor. A photograph of the Seventh Street building taken around 1908 show that by then, the year 1792 and the words "Ye Olde Mint" (in quotes) had been painted onto the facade.

Between the smelt house and the building on Seventh Street, a mill house was built. Horses in the basement turned a rolling mill located on the first floor.

In January 1816, the smelt and mill houses were destroyed by a fire. The smelt house was never repaired and all smelting was done elsewhere. The mill house, which was completely destroyed, was soon replaced with a large brick building. It included a new steam engine in the basement to power the machinery.

Until 1833, these three buildings provided the United States with hard currency. Operations moved to the second Philadelphia mint in 1833, and the land housing the first mint was sold. In the late 19th or early 20th century, the property was sold to Frank Stewart, who approached the city, asking them to preserve or relocate the historic buildings. With no governmental help, the first mint was demolished between 1907 and 1911. Now, only a small plaque remains to memorialize the spot.

On July 4, 1829, a cornerstone was laid for the building at the intersection of Chestnut and Juniper Streets. It was designed by William Strickland. The second Philadelphia Mint, the "Grecian Temple", was constructed of white marble with classic Greek-style columns on front and back. Measuring 150 ft (46 m) wide in front by 204 ft (62 m) deep, it was a huge improvement over the first facility, in space as well as image. Opening in January 1833, its production was constrained by the outdated machinery salvaged from the first mint. Franklin Peale was sent to Europe to study advanced coin-making technologies which were brought back and implemented, increasing productivity and quality.

Sold in 1902, the second mint was quickly demolished. The cornerstone buried in 1829 was unearthed and contained a candy jar with a petrified cork stoppering it. Inside the jar were three coins, a few newspapers, and a scroll with information on the first mint and the creation of the second.

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