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A coin catalog (or coin catalogue) is a listing of coin types. Information may include pictures of the obverse and reverse (front and back), date and place of minting, distribution type, translation of inscriptions, description of images, theme, metal type, mintage, edge description, orientation of the coin, weight, diameter, thickness, design credentials, shape and prices for various grades.
Marie Thérèse Coincoin, [a] born as Coincoin (with no surname), [1] also known as Marie Thérèse dite Coincoin, [2] and Marie Thérèse Métoyer, [3] [4] (August 1742 – 1816) was a planter, slave owner, [1] and businesswoman at the colonial Louisiana outpost of Natchitoches (later known as Natchitoches Parish).
In addition, the Red Book lists commemorative coins, mint sets and proof sets, and bullion coins, as well as significant U.S. pattern coins, private and territorial gold, Hard-times tokens and Civil War tokens. Also listed are Confederate issues, Hawaiian tokens and coins, Philippine issues and Alaskan tokens.
Under United Kingdom law, a coin is considered to be an investment coin, and hence transactions in it are not subject to value-added tax (VAT), if it is minted after 1800, and at least 900 thousandths fine, and has been legal tender in its country of origin; or if it is on a list of coins deemed to be investment coins. [2]
Individual coin ownership records are stored in a digital ledger or blockchain, which is a computerized database that uses a consensus mechanism to secure transaction records, control the creation of additional coins, and verify the transfer of coin ownership. [3] [4] [5] The two most common consensus mechanisms are proof of work and proof of ...
As well as circulating coins, where they are generally restricted to high-denomination coins, bi-metallic coins are often used in commemorative issues, often made of precious metals. For example, the only bi-metallic coin issued by the United States is the $10 Library of Congress commemorative , made of a gold ring around a platinum center.
A meme coin (also spelled memecoin) is a cryptocurrency that originated from an internet meme or has some other humorous characteristic. [ 1 ] The term is sometimes used interchangeably with the term shitcoin , which typically refers to a cryptocurrency with little to no value, authenticity, or utility. [ 2 ]
Reddit decommissions its last physical servers and moves its hosting to Amazon Web Services. [21] 2009: late in year: Product: The online gift exchange RedditGifts runs for the first time. [22] 2010: June 7: Product: Reddit launches a revamped mobile interface featuring rewritten CSS, a new color scheme, and a multitude of improvements. [23 ...