Denver Mint, United States

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The Denver Mint is a branch of the United States Mint that struck its first coins on February 1, 1906. The mint is still operating and producing coins for circulation, as well as mint sets and commemorative coins. Coins produced at the Denver Mint bear a D mint mark (not to be confused with the mark of the Dahlonega Mint). The Denver Mint is the single largest producer of coins in the world.

History

Denver Mint
Denver Mint Recently

The predecessors of the Denver Mint were the men of Clark, Gruber & Company. During the Pikes Peak Gold Rush, they coined gold dust brought from the gold fields by the miners. For almost three years, they minted gold coins (1860-61) and ingots (1862). They were formally bought by the US Treasury in 1863.

Established by an Act of Congress on April 21, 1862, the United States Mint at Denver opened for business in late 1863 as a United States Assay Office. Operations began in the facilities of Clark, Gruber & Company, located at 16th and Market Streets and acquired by the government for $25,000.

Unlike Clark, Gruber & Company, though, the Denver plant performed no coinage of gold as first intended. One reason given by the Director of the Mint for the lack of coinage at Denver was, "... the hostility of the Indian tribes along the routes, doubtless instigated by rebel emissaries (there being a Civil War) and bad white men."

Gold and nuggets brought to there by miners from the surrounding area were accepted by the Assay Office for melting, assaying, and stamping of cast gold bars. The bars were then returned to the depositors as imparted bars stamped with the weight and fineness of the gold. Most of the gold came from the rich beds of placer gold found in the streams and first discovered in 1858, the same year Denver was founded.

Denver Mint
Denver Mint in 1972

When the supply of gold was exhausted from the streams, the emphais turned to lode mining, uncovering veins of ore with a high percentage of gold and silver. By 1859, the yearly value of the gold and silver deposited at the Assay Office was over $5.6 million. During its early years as an Assay Office, the Denver plant was the city's most substantial structure.

The United States Treasury did not expand its smelting and refining operations at the same rate as the discovery and production of gold. In 1872 a group of businessmen lead by Judge Hiram Bond (formerly one of the largest brokers on the New York Gold Exchange), Joseph Miner and Denver Mayor Joseph E. Bates set up a firm Denver Smelting and Refining Works which built an independent complementary plant which processed ore into ingots which were then assayed, weighed and stamped by the Denver Mint.

There was new hope for branch mint status when Congress provided for the establishment of a mint at Denver for gold and silver coin production. The site for the new mint at West Colfax and Delaware streets was purchased on April 22, 1896, for approximately $60,000. Construction began in 1897.

Appropriations to complete and equip the plant were insufficient, and the transfer of assay operations to the new building were delayed until September 1, 1904. Coinage operations finally began in February 1906, advancing the status of the Denver facility to Branch Mint. In addition, before the new machinery to be used at the Mint was installed for use, it was first sent to the St. Louis Exposition of 1904 for display. Silver coins were minted in Denver for the first time in 1906. During the first year, 167 million coins were produced, including $20 gold (double eagle) coins, $10 gold (eagle) coins, $5 gold (half eagle) coins, and assorted denominations of silver coins.

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