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66 aluminum cents made in 1975 as trial strikings. [25] [26] At least 1 example of an aluminum Lincoln Wheat cent struck in 1942 to test a possible alternative composition to bronze for the following year. Unlike the 1974–75 aluminum cents, this coin appears to be legal to possess and was sold at Heritage Auctions in May 2009. [27] [28] [29]
Estimated value: Between $250,000 and $2 million The 1974 Aluminum Lincoln Cent is an elusive and highly valuable coin, notable for its unique composition. In 1974, the U.S. Mint experimented with ...
Aluminum was chosen, and over 1.5 million samples of the 1974 aluminum cent were struck before ultimately being rejected. The cent's composition was changed in 1982 because the value of the copper in the coin started to rise above one cent. [7] Some 1982 cents used the 97.5% zinc composition, while others used the 95% copper composition.
Today [when?] it is known to hold ten 1933 Double Eagle gold coins, a 1974-D aluminum cent, and twelve gold (22-karat) Sacagawea dollar coins that flew on the Space Shuttle Columbia, specifically STS-93 in 1999. The depository is a secure facility. Between its fenced perimeter and granite-lined concrete structure lie rings of razor wire.
One example of a pattern coin for proposed coinage is the half-union, a gold pattern coin with a face value of 50 U.S. dollars that was minted in 1877 and weighed 2.5 ounces (71 g). The U.S. Mint deemed the idea of a 2.5-ounce gold coin infeasible, and only two were ever minted. [4] [5]
Due to the large quantities struck, Bicentennial coins remain inexpensive. A set of three silver coins contains .5381 troy ounces (16.74 g) of the precious metal. [38] [41] [42] In a 1996 statistical study, T.V. Buttrey found that about 750,000,000 of the circulation quarters, more than a third, had been hoarded and did not circulate. [45]
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