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  2. Penny (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Penny_(United_States_coin)

    The predominantly zinc coins make a lower-pitched "clunk" when hitting the surface, and make no sound when flipped in the air; while the copper coins produce a higher-pitched ringing sound. [8] In addition, a full 50-cent roll of pre-1982/3 coins weighs 5.4 oz (150 g) compared to a post-1982–83 roll which weighs 4.4 oz (120 g).

  3. Coinage Act of 1965 - Wikipedia

    en.wikipedia.org/wiki/Coinage_Act_of_1965

    The Coinage Act of 1792 established the Mint of the United States, and made both gold and silver legal tender. This meant that anyone could present bullion at the Philadelphia Mint and receive it back, struck into coins. The 1792 act authorized six silver coins, in value from five cents to a dollar, and prescribed their weights and fineness.

  4. Coinage Act of 1792 - Wikipedia

    en.wikipedia.org/wiki/Coinage_Act_of_1792

    On the reverse of the copper coins, there express the denomination of the coin as one-cent or half-cent. [4] The Act specified the issuing of three gold coins comprising a $10 gold coin called an "eagle", a $5 coin called a "half eagle", and a $2.5 coin called a "quarter eagle". [5]

  5. Coins of the United States dollar - Wikipedia

    en.wikipedia.org/wiki/Coins_of_the_United_States...

    Coins of the United States dollar – aside from those of the earlier Continental currency – were first minted in 1792. New coins have been produced annually and they comprise a significant aspect of the United States currency system. Circulating coins exist in denominations of 1¢ (i.e. 1 cent or $0.01), 5

  6. Half cent (United States coin) - Wikipedia

    en.wikipedia.org/wiki/Half_cent_(United_States_coin)

    The half-cent piece was made of 100% copper and half of a cent, or one two-hundredth of a dollar (five milles). It was slightly smaller than a modern U.S. quarter with diameters 22 mm (1793), [1] 23.5 mm (1794–1836), [2] and 23 mm (1840–1857). [3] They were all produced at the Philadelphia Mint.

  7. Gold coin - Wikipedia

    en.wikipedia.org/wiki/Gold_coin

    Gold coins for sale at the Dubai Gold Souk. A gold coin is a coin that is made mostly or entirely of gold.Most gold coins minted since 1800 are 90–92% gold (22‑karat), while most of today's gold bullion coins are pure gold, such as the Britannia, Canadian Maple Leaf, and American Buffalo.