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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 for ...
The 20 franc coins are 21 mm in diameter (about the size of a U.S. five cent piece), 1.25 mm in thickness, weigh 6.45 grams (gross weight) and; at 900 ‰ pure, contain .1866 troy ounces or 5.805 grams of pure gold. The 10 franc coin weighs 3.23 grams and at 900 ‰ purity contains 2.9 grams (0.093 troy ounces) of pure gold.
Due to the rarity of the coin and the mysteries surrounding its past, the 1894-S dime is one of the most valuable coins produced in the United States. [4] In the late 1990s, one of the remaining 1894-S dimes was bought for $825,000. Since then they have sold for $1,035,000 in 2005; $1.3 million also in 2005; and $1.9 million in 2007.
On 3 May 2007, the Royal Canadian Mint unveiled a Gold Maple Leaf coin with a nominal face value of $1 million and a metal value of over $3.5 million, referred to as a Big Maple Leaf. [ 5 ] [ 6 ] It measures 50 cm in diameter by 3 cm thick and has a mass of 100 kg , with a purity of 99.999%.
Since 2009, a scratch-resistant holder coating, similar to that used on eyeglass lenses, has been employed. NGC offers Oversize holders for coins larger than 45 mm and up to 120 mm, and Mega holders for coins larger than 120 mm and up to 180 mm. [12] NGC's label lists a coin's denomination, variety, grade, pedigree, serial number, and other info.
The United States trade dollar was a dollar coin minted by the United States Mint to compete with other large silver trade coins that were already popular in East Asia.The idea first came about in the 1860s, when the price of silver began to decline due to increased mining in the western United States.
In 1933, in an attempt to end the 1930s general bank crisis, U.S. president Franklin D. Roosevelt issued Executive Order 6102, which provisions included: . Section 2. All persons are hereby required to deliver on or before May 1, 1933, to a Federal Reserve bank or a branch or agency thereof or to any member bank of the Federal Reserve System all gold coin, gold bullion, and gold certificates ...
Tye suggests that variable coin weight may have been a deliberate strategy to destabilize markets to reduce peasants to subsistence levels, pushing them into serfdom. Elites could still make large payments in coin by weighing them, using scales, an option unavailable to peasants making small purchases, driving them into the hands of middlemen ...