The Philadelphia Mint was created from the need to establish a national identity and the needs of commerce in the United States. This led the Founding Fathers of the United States to make an establishment of a continental national mint, a main priority after the ratification of the Constitution of the United States.
The Coinage Act of 1792 was entered into law on April 2. It proclaimed the creation of the United States Mint. Philadelphia, at that time was the nation's capital; therefore the first mint facility was built there. The Coinage Act of 1792 also instituted a decimal system based on a dollar unit; specified weights, metallic composition and fineness; and required each United States coin feature "an impression emblematic of liberty".
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, and 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 coinmaking 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.
The site has been occupied since 1914 by the 19-story Widener Building, 1339 Chestnut Street.
The third Philadelphia Mint was built at 1700 Spring Garden Street and opened in 1901. It was designed by William Martin Aiken, Architect for the Treasury, but it was constructed under James Knox Taylor. It was a block from the United States Smelting Company that was at Broad and Spring Garden Streets. In one year alone, the mint produced 501 million coins (5/7 of the U.S. currency minted), as well as 90 million coins for foreign countries.
A massive structure nearly a full city block, it was an instant landmark, characterized by a Roman temple facade. Visitors enjoyed seven themed glass mosaics designed by Louis C. Tiffany in a gold-backed vaulted ceiling. The mosaics depicted ancient Roman coinmaking methods. This mint still stands intact, and much of the interior is intact, as well. It was acquired by the Community College of Philadelphia in 1973. A tribute page has been created.
Two blocks from the site of the first mint, the fourth and current Philadelphia Mint opened its doors in 1969. It was designed by Philadelphia architect Vincent G. Kling, who would also help design Five Penn Center, Centre Square, and the Annenberg Center for the Performing Arts. It was the world's largest mint when it was built and held that distinction as of October 2017.
The Philadelphia Mint can produce up to one million coins in 30 minutes. It took three years for the original mint to produce that many. The mint also produces medals and awards for military, governmental, and civil services. Engraving of all dies and strikers only occurs here. Uncirculated coins minted here have the "P" mint mark, while circulated coins from before 1980 carried no mint mark except the Jefferson nickels minted from 1942–1945 and the 1979 Susan B. Anthony dollar coins. Since 1980, all coins minted there have the "P" mint mark except cents (although 2017 cents do have the "P" mint mark).
Tours can be taken where all stages of minting are explained, along with displays of past equipment. This takes place via an enclosed catwalk above the minting facility itself. Various video stations are placed along the tour route, where visitors can push buttons to watch videos about various stages of the minting process. Most of those videos were narrated by Baseball Hall of Fame announcer for the Philadelphia Phillies (and voice of NFL Films), Harry Kalas.
On August 19, 1858, two well-dressed thieves on a tour of the mint used a counterfeit key to open a display case. They made off with $265.00 in gold pieces, but due to the rarity of the coins, the men were quickly apprehended while trying to spend them in local shops.
In 1893, Henry S. Cochran, a weighing clerk, was found to have embezzled $134,000 in gold bars from the mint vault over a period of 8–10 years. A total of $107,000 was recovered from his home and from a cache in the ventilation system inside the mint.
About 445,000 double eagle coins were minted in 1933, but only one was ever legally released. King Farouk of Egypt contacted Nellie Tayloe Ross, then Director of the U.S. Mint, and requested one 1933 double eagle for his extensive coin collection. Since the 1933 coins were not circulated, she took one coin to the Smithsonian Institution and received documentation of its rarity. She then issued an export document allowing the Egyptian king to receive his coin. After the deaths of Farouk and the general who inherited the king's collection, the coin disappeared into a European collector's possession. It resurfaced when Stephen Fenton acquired it. When he tried to auction it off, both he and the auctioneer were arrested and the coin was seized. It was placed in the vault of the Secret Service in their office in the World Trade Center. While the provenance and paperwork proving ownership was debated ad nauseam in the courts, the coin was transferred to Fort Knox for further safekeeping. The World Trade Center was attacked and destroyed later that year. An agreement was reached between the U.S. Government and Stephen Fenton. The Fenton Farouk, as it came to be called, was sold at auction for $7.9 million in 2002 with a 10% auctioneer's premium and $20 to "monetize" the coin. Fenton and the government split the proceeds of the auction, with the provision that any further 1933 double eagles would be seized and not auctioned. In 2003, a Philadelphia woman named Joan Switt Langbord found 10 1933 double eagles in a safe deposit box that once belonged to her parents; when she took them to be appraised, they were seized by the United States Treasury as stolen property. Investigators claimed that Langbord's father, Israel Switt, conspired with a clerk inside the mint to steal the coins. He had been investigated previously for the crime, leading to the confiscation of several gold pieces, but the statute of limitations had prevented him from being prosecuted. Langbord sued to have the coins returned to her, but in July 2011, a federal jury ruled the stolen coins were property of the U.S. government.
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