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For example, in detecting a dissimilar coin in three weighings ( = ), the maximum number of coins that can be analyzed is = .Note that with weighings and coins, it is not always possible to determine the nature of the last coin (whether it is heavier or lighter than the rest), but only that the other coins are all the same, implying that the last coin is the ...
The Quarter-Dollar, Half-Dollar and Dollar coins were issued in the copper 91.67% nickel 8.33% composition for general circulation and the Government issued six-coin Proof Set. A special three-coin set of 40% silver coins were also issued by the U.S. Mint in both Uncirculated and Proof.
Coin collecting is the collecting of coins or other forms of minted legal tender. Coins of interest to collectors include beautiful, rare, and historically significant pieces. Collectors may be interested, for example, in complete sets of a particular design or denomination, coins that were in circulation for only a brief time, or coins with ...
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Coins or currency which must be accepted in payment of debt. legend The principal inscription on a coin. [1] lettered edge The outside edge of a coin containing an inscription. [1] low relief A coin with the raised design not very high above the field. luster The appearance of a coin's ability to reflect light; brilliance.
In 2004, a "dot cent", as they are sometimes called, sold at auction for $207,000. The one-cent coin was sold again in the Canadiana sale for $400,000, while an example of the ten-cent piece with the dot sold for $184,000. [11] The 25¢ coin, while not as rare as the one-cent and ten-cent pieces, is still a very difficult coin to find.
Standard Catalog of World Gold Coins: With Platinum and Palladium Issues: 1601–present, 6th Edition, publication date 2009, Krause Publications, ISBN 978-1-4402-0424-1 Digital copy available separately. Unusual World Coins, 6th Edition, publication date 2011, Krause Publications, ISBN 978-1-4402-1702-9 Digital copy available separately.
Ephesus' great temple of Artemis has provided evidence for the earliest coins yet known from the ancient world. [nb 1] The first structures in the sanctuary, buried deep under the later temples, date back to the eighth century BCE, and from that time on precious objects were used in the cult or dedicated to the goddess by her worshippers.