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Small, decorative tooth-like projecting points on the inside edge of a coin. [5] designer The artist or creator of a coin's design. [1] device A pattern or emblem used in the design of a coin. die An engraved metal piece used for transferring the design to the coin. In a vertical arrangement, the upper (or hammer) die is typically used for the ...
A metal money clip is generally a solid piece of metal folded into half, such that the banknotes and credit cards are securely wedged in between the two metal pieces. Metal money clips are typically made out of brass, stainless steel, silver, gold, titanium, or platinum and are usually sold as luxury items. The main disadvantage of a metal ...
Striking a coin refers to pressing an image into the blank metal disc, or planchet, and is a term descended from the days when the dies were struck with hammers to deform the metal into the image of the dies. Modern dies made out of hardened steel are capable of producing many hundreds of thousands of coins before they are retired and defaced.
A similar method had been used in Ancient Egypt during the Ptolemaic Kingdom (c. 300 BC), but had been forgotten. Square pieces of metal were also cut from cast bars, converted into round disks by hammering and then struck between dies. In striking, the lower die was fixed into a block of wood, and the blank piece of metal laid upon it by hand.
Coins were first made of scraps of metal by hitting a hammer positioned over an anvil. The Chinese produced primarily cast coinage, and this spread to South-East Asia and Japan. Although few non-Chinese cast coins were produced by governments, it was a common practice amongst counterfeiters. Electrum coin from Ephesus, 650-625 BC.
Silk money from Khorezm, in Uzbekistan [21] and other central Asian countries around the 1930s. Bielefeld notgeld in the 1920s. Stone: Rai stones from Yap island Wood: Used in Japan in the 1860s, for Austrian and German notgelds in the 1920s, and Tenino in the 1930s. A Congo 5 francs coin issued in 2006 was perhaps the first 'official' wooden coin.
A plain metal washer, if of the correct size and weight, may be accepted as a coin by a vending machine. A slug is a counterfeit coin that is illegally used to make purchases. The object substituted may be an inexpensive object such as a washer or a coin from another country with far lower purchasing power than the coin it is being passed off as.
Other terms often used for printed engravings are copper engraving, copper-plate engraving or line engraving. Steel engraving is the same technique, on steel or steel-faced plates, and was mostly used for banknotes, illustrations for books, magazines and reproductive prints, letterheads and similar uses from about 1790 to the early 20th century, when the technique became less popular, except ...