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Trillion-dollar coin concept design by artist DonkeyHotey, featuring a similar obverse design to the reverse of the Presidential dollar series. The trillion-dollar coin is a concept that emerged during the United States debt-ceiling crisis of 2011 as a proposed way to bypass any necessity for the United States Congress to raise the country's borrowing limit, through the minting of very high ...
A bullion coin (also known as a specie) is a coin struck from highly refined precious metal and kept as a store of value or an investment rather than used in day-to-day commerce. [1] A bullion coin is distinguished by its weight (or mass) and fineness on the coin.
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
[1] Seven distinct types of coin composition have been used over the past 200 years: three base coin alloys, two silver alloys, gold, and in recent years, platinum and palladium. The base metal coins were generally alloys of copper (for 2 cent coins and lower), and copper/nickel (for 3 and 5 cent coins). Copper/nickel composition is also used ...
Also, unlike any other denomination of circulating U.S. coinage (but in common with the Presidential $1 coins), the value is inscribed in numerals on the reverse. The act passed by Congress requires that 20% of the total dollar coins minted in any year during the Presidential $1 Coin Program be Sacagawea dollars bearing the new design.
Coin weights are weights used to weigh precious-metal coins in order to assure they were not underweight (It is easy to shave a bit of metal off the edge of a silver or gold coin). [1] The usage of coin weights, especially glass ones, goes back to Ptolemaic and Byzantine times. [1] Coin weights were also known in Ancient China. [2]
A pennyweight (dwt) is a unit of mass equal to 24 grains, 1 ⁄ 20 of a troy ounce, 1 ⁄ 240 of a troy pound, approximately 0.054857 avoirdupois ounce [1] and exactly 1.55517384 grams. [2] It is abbreviated dwt , d standing for denarius – (an ancient Roman coin), and later used as the symbol of an old British penny (see £sd ).
The 1 ⁄ 10, 1 ⁄ 4, and 1 ⁄ 2 troy oz coins are identical in design to the 1 troy oz coin except for the markings on the reverse side that indicate the weight and face value of the coin (for example, 1 OZ. fine gold~50 dollars). The print on the smaller coins is, therefore, finer and less legible than on larger denominations.