The 1814 platinum half dollar (J-44 [1] ) was a United States pattern coin with a face value of fifty cents. Its design was identical to the Capped Bust half dollar, but struck in platinum. [2]
A unique example with 33 "P" punch marks has been given the catalog number J-44a. It has been described as "one of the most intriguing - and mysterious - pattern coins ever produced by the United States." [3] There are two examples known without the punch marks. [4]
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¢, 5¢, 10¢, 25¢, 50¢, and $1.00. Also minted are bullion, including gold, silver and platinum, and commemorative coins. All of these are produced by the United States Mint. The coins are then sold to Federal Reserve Banks which in turn put coins into circulation and withdraw them as demanded by the United States economy.
Mint-made errors occur when coins are made incorrectly at the mint, including anything that happens to the coin up until the completion of the minting process. Mint error coins can be the result of deterioration of the minting equipment, accidents or malfunctions during the minting process, or interventions by mint personnel. Coins are inspected during production and errors are typically caught. However, some are inadvertently released into circulation. Modern production methods eliminate many errors and automated counters are effective at removing error coins. Damage occurring later may sometime resemble true mint errors. Error coins may be of value to collectors depending on the rarity and condition. Some coin collectors specialize in error coins.
The half dollar, sometimes referred to as the half for short or 50-cent piece, is a United States coin worth 50 cents, or one half of a dollar. In both size and weight, it is the largest circulating coin currently minted in the United States, being 1.205 inches in diameter and 0.085 in (2.16 mm) in thickness, and is twice the weight of the quarter. The coin's design has undergone a number of changes throughout its history. Since 1964, the half dollar depicts the profile of President John F. Kennedy on the obverse and the seal of the president of the United States on the reverse.
The United States Mint has minted numerous commemorative coins to commemorate persons, places, events, and institutions since 1848. Many of these coins are not intended for general circulation, but are still legal tender. The mint also produces commemorative medals, which are similar to coins but do not have a face value, and therefore are not legal tender.
Proof coinage refers to special early samples of a coin issue, historically made for checking the dies and for archival purposes. In modern times, proofs are often struck in greater numbers, especially for coin collectors (numismatists). Nearly all countries have issued proof coinage.
A double eagle is a gold coin of the United States with a denomination of $20. The coins are 34 mm × 2 mm and are made from a 90% gold and 10% copper alloy and have a total weight of 1.0750 troy ounces.
The eagle is a United States $10 gold coin issued by the United States Mint from 1795 to 1933.
The American Platinum Eagle is the official platinum bullion coin of the United States. In 1995, Director of the United States Mint Philip N. Diehl, American Numismatic Association President David L. Ganz, and Platinum Guild International Executive Director Jacques Luben began the legislative process of creating the Platinum Eagle. After over two years of work, the 99.95% fine platinum coins were released by the United States Mint in 1⁄10, 1⁄4, 1⁄2 and 1 troy oz denominations. In late 2008, the fractional denominations were discontinued, leaving only the one ounce denomination. The Platinum Eagle is authorized by the United States Congress, and is backed by the United States Mint for weight, content, and purity. Its obverse was designed by John Mercanti, and portrays the Statue of Liberty by Frédéric Auguste Bartholdi
A pattern coin is a coin which has not been approved for release, but produced to evaluate a proposed coin design. They are often off-metal strike, to proof standard or piedforts. Many coin collectors collect and study pattern coins because of their historical importance. Many of the world's most valuable coins are pattern coins; nearly 25 of the pieces listed in 100 Greatest US Coins are pattern coins.
This glossary of numismatics is a list of definitions of terms and concepts relevant to numismatics and coin collecting, as well as sub-fields and related disciplines, with concise explanations for the beginner or professional.
Platinum coins are a form of currency. Platinum has an international currency symbol under ISO 4217 of XPT. The issues of legitimate platinum coins were initiated by Spain in Spanish-colonized America in the 18th century and continued by the Russian Empire in the 19th century. As a form of currency, these coins proved to be impractical: platinum resembles many less expensive metals, and, unlike the more malleable and ductile silver and gold, it is very difficult to work. Several commemorative coin sets have been issued starting from 1978 and became popular among coin collectors. The major platinum bullion coins include the American Platinum Eagle, the Canadian Platinum Maple Leaf, the Australian Platinum Koala, the Isle of Man Noble, the Chinese Platinum Panda, the Austrian Vienna Philharmonic and several series by the Soviet Union and later by the Russian Federation.
The 1792 half disme is an American silver coin with a face value of five cents which was minted in 1792. Although it is subject to debate as to whether this was intended to be circulating coinage or instead an experimental issue, President George Washington referred to it as "a small beginning" and many of the coins eventually were released into circulation. It is widely considered the first United States coinage struck under authority of the Coinage Act of 1792.
The Brasher Doubloon is a rare American doubloon of eight escudos worth sixteen dollars, privately minted in and after 1787.
The half union was a United States pattern coin with a face value of fifty U.S. Dollars. It is often thought of as one of the most significant and well-known patterns in the history of the U.S. Mint. The basic design, featuring Liberty on the obverse, was slightly modified from the similar $20 "Liberty Head" Double Eagle, which was designed by James B. Longacre and minted from 1849 to 1907.
The Canadian silver dollar was first issued by the Royal Canadian Mint in 1935 to commemorate the Silver Jubilee of King George V. The coin's reverse design was sculpted by Emanuel Hahn and portrays a voyageur and a person of Indigenous descent paddling a birch-bark canoe. The faint lines in the background represent the Northern Lights. The voyageur design was used on the dollar until 1986. It was then replaced with the 1987 Canadian 1-dollar coin. 1967 marked the end of the silver dollar as a business strike, or a coin issued for circulation. After 1967, the dollar coin was made of nickel, except for non-circulating commemorative issues for the collector market, which continue to contain silver.
A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other (optional) markings to indicate the date of manufacture and additional information about the piece. In some countries, a national assayer's office controls the testing of silver objects and marking of purity.
The Susan B. Anthony dollar is a United States dollar coin minted from 1979 to 1981, when production was suspended due to poor public acceptance, and then again in 1999. Intended as a replacement for the larger Eisenhower dollar, the new smaller one-dollar coin went through testing of several shapes and compositions, but all were opposed by the vending machine industry, a powerful lobby affecting coin legislation. Finally, a round planchet with an eleven-sided inner border was chosen for the smaller dollar.
The United States Mint Proof Set, commonly known as the Proof Set in the United States, is a set of proof coins sold by the United States Mint. The proof set is popular with coin collectors as it is an affordable way to collect examples of United States coinage in proof condition.
The Union was a proposed $100 coin of the United States dollar. It was canceled before any pattern coins could be minted.
The Continental Currency dollar coin was the first pattern coin struck for the United States. The coins, which were designed by Benjamin Franklin, were minted in 1776 and examples were made on pewter, brass, and silver planchets.