217:
486:
456:
704:
196:
525:
442:
471:
554:
718:
40:
692:), which has raised lettering around its rim. If the coin is uncirculated, the letters will be flat on top. If slightly rounded, and the coin is uncirculated, it is a counterfeit. There are other counterfeit double eagles in which the gold and copper alloy was not thoroughly mixed. These counterfeits will have a slightly mottled appearance.
404:
293:
Gold coins were rising in popularity during the Middle Ages in Europe. These coins were made of nearly pure gold and usage was low compared to coins made of bronze and silver which were more plentiful. Coins were often melted down if the raw material was more valuable than the coin. To prevent this,
655:
The rationale for biting a coin was the supposed widespread dissemination of gold-plated lead coins in the 19th century. Since lead is much softer than gold, biting the coins is a sensible test for counterfeiting. While fine gold is softer than alloyed gold, and galvanized lead is softer, biting
577:
Bullion coin counterfeits were formerly rare and fairly easy to detect when comparing their weights, colors and sizes to authentic pieces. This is because the cost of reproducing a coin precisely can exceed the market value of the originals. However, since about 2015 counterfeit coins have been
561:
Gold is denser than almost all other metals, hence hard to fake. A coin that is not gold or below the expected fineness will either be too light for its size or too large for its weight. Most metals of similar or higher density to gold are as expensive or more and were unknown in ancient times
362:
coins, but after several interested buyers came forward the mint announced it would manufacture them as ordered and sell them for between $ 2.5 million and $ 3 million. As of May 3, 2007, there were five orders. One of these coins was stolen when it was on exhibition at the
605:
alloy with 22 karats = .917 fineness) may have the correct weight and dimensions because of the lesser density of the alloy. Such forgeries can be detected testing the acoustic, electric resistance or magnetic properties. The latter method uses the fact that gold is weakly
1314:
517:
have added an additional list of gold coins alongside the
European Commission list. These are gold coins that HM Revenue & Customs recognize as falling within the exemption for investment gold coins. This second list does not have legal force.
357:
with a face value of $ 1,000,000, though the gold content was worth over $ 2 million at the time. It measures 50 centimetres (20 in) in diameter and is 3 centimetres (1.2 in) thick. It was intended as a one-off to promote a new line of
671:
commented in 2012 that "It's become an obsession with the photographers. I think they look at it as an iconic shot, as something that you can probably sell. I don't think it's something the athletes would probably do on their own."
566:). During the 19th century, platinum was cheaper than gold and was used for counterfeiting gold coins. These coins could be detected by acoustic properties. Only two relatively inexpensive substances are of similar density to gold:
1322:
324:
Gold coins then had a very long period as a primary form of money, only falling into disuse in the early 20th century. Most of the world stopped making gold coins as currency by 1933, as countries switched from the
666:
Olympic champions often pose biting their gold medals, even though the medals are no longer made of solid gold. Only at three
Olympics (in 1904, 1908 and 1912) were medals made of solid gold but were also smaller.
981:
663:"This cliché might find its origin in the crude testing method used by American prospectors during the 19th century gold rush. They bit the gold nuggets they found to be sure that they were not fool's gold"
578:"flooding the market at an astonishing rate" and "it's gotten to the point where even people who deal with coins all the time may not be able to recognize a counterfeit coin right away" (
513:
publishes annually a list of gold coins which must be treated as investment gold coins in all EU Member States. The list has legal force and supplements the law. In the United
Kingdom,
582:(ANA), 2016). The coins consist mostly of tungsten plated thinly with gold, have the correct weight, correct or near-correct dimensions, and are professionally produced in China.
618:
and sensitive conditions (e.g. a gold coin hanging from 2 m long pendulum or placed on
Styrofoam floating on water), but such tests can be performed without special equipment.
1381:
374:
produced the first gold coin with a 0.11–0.14 ct diamond. The Queen's
Diamond Jubilee coin was crafted in 99.999% pure gold with a face value of $ 300.
1054:
174:
such as silver. Gold can be re-coined, divided into smaller units, or melted into larger units such as gold bars, without destroying its metal value. The
337:
forbade most private ownership of gold and was followed by a devaluation of the dollar relative to gold, although the United States did not completely
275:. The most valuable of all Persian minted coinage still remains the gold drams, minted in 1 AD as a gift by the Persian King Vonones (Matthew 2.1–23).
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Biting a coin to determine whether it is genuine or counterfeit is a widespread cliché depicted in many films (like the 1917
133:
656:
coins can only detect the crudest of forgeries. And all "gold" coins minted for circulation in the UK and
America since the
1378:
1336:
1225:
1202:
901:
434:. The coin was designed for circulation: "124 Stk. 1 Kil. f. G." means that 124 pieces gave one kilogram of pure gold.
170:
between the prices to buy and sell. Gold is easily transportable, as it has a high value-to-weight ratio compared to
579:
1046:
1359:
Gold Coins of the World: From
Ancient Times to the Present – An Illustrated Standard Catalogue with Valuations
1393:
216:
416:
31:
649:
470:
17:
1424:
1117:
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cannot be replicated precisely by a gold plated tungsten core, since tungsten has only 99.74% of the
524:
1281:
681:
586:
359:
182:. Additionally, gold is extremely unreactive chemically: it does not tarnish or corrode over time.
75:
844:
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310:
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141:
79:
1195:"Sehr gut gefälschte Goldmünzen: Echtheitsprüfung für Krügerrand, Maple Leaf und American Eagle"
1142:
1102:
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382:
94:
441:
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coins were given more complex designs in order to raise the coin's value and prevent clipping.
753:
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8:
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117:
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574:. Depleted uranium is government-regulated, but tungsten is more commonly available.
268:
232:
195:
1255:
1016:
771:
615:
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491:
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of 9999 pure gold and is approximately 80 cm in diameter by 12 cm thick.
330:
256:
71:
1076:
90:, are typically 91.7% gold by weight, with the remainder being silver and copper.
1385:
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660:(1485–1603) contained copper which made them more durable and thus hard to bite.
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The largest legal-tender gold coin ever produced was unveiled in 2012 by the
326:
144:
of $ 10, but a metal value of approximately $ 500 (as of
January 2024).
680:
There are well made counterfeit gold coins in circulation. For example, the
723:
689:
657:
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504:
477:
427:
306:
152:
148:
125:
109:
799:
782:
732:
607:
364:
338:
179:
171:
63:
735: – Making a copy or imitation which is represented as the original
688:, is famous for its quality. Another example is the US $ 20 gold coin (
602:
598:
403:
378:
236:
200:
105:
87:
1218:"Test Tungsten / Wolfram Fälschungen von Krügerrand-Goldmünzen prüfen"
1169:"Glitters, but Not Gold: Fake Gold and Silver Coins 'Flooding' Market"
1118:"Indian Head Quarter Eagles: King of the Counterfeit Gold Coin Series"
178:
of gold is higher than most other metals, making it difficult to pass
997:"The music of gold: can gold counterfeited coins be detected by ear?"
553:
101:
759:
571:
543:
431:
244:
163:
156:
98:
39:
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The weight and dimensions of a coin of .999 fineness such as the
447:
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260:
248:
175:
67:
385:" and with a face value of one million dollars, it contains one
231:
Gold was used in commerce (beside other precious metals) in the
1398:
412:
62:. Most gold coins minted since 1800 are 90–92% gold (22‑
747: – gold and silver issues of the euro commemorative coins
932:"Giant gold coin with Queen's head stolen from Berlin museum"
805:
386:
272:
252:
203:
329:
due to hoarding during the worldwide economic crisis of the
243:
proper originated much later, during the 6th century BC, in
593:
of gold. However, forgeries of alloyed gold coins (such as
240:
59:
55:
741: – Gold foil covered chocolates in the shape of coins
430:
included tonnes of this and other coins, backing Norway's
1286:
652:
biting into a coin is almost certainly a
Hollywood myth.
882:"Nixon's Economic Policies Return to Haunt the G. O. P."
267:
as a contender). In 546 BC, Croesus was captured by the
902:"The Million Dollar Coin – a true milestone in minting"
278:
108:. Since then, gold coins have mainly been produced as
614:. The effect is weak so that testing requires strong
1143:"Fake gold bars out of tungsten a counterfeit story"
749:
Pages displaying wikidata descriptions as a fallback
699:
255:
remains associated with the invention (although the
162:
Gold has been used as money for many reasons. It is
785: – Study of currencies, coins and paper money
768: – Monetary system based on the value of gold
1315:"The 1907 High Relief Saint-Gaudens Double Eagle"
1192:
30:"Gold coins" redirects here. For other uses, see
1406:
1248:"Why do pirates bite gold coins they are given?"
1275:
1273:
1271:
1162:
1160:
159:, but gold coins may occasionally contribute.
1312:
1241:
1239:
1237:
1235:
1215:
557:Balance for checking the weight of gold coins
1268:
1157:
415:. Introduced in 1875, it became part of the
381:in Western Australia. Known as the "1 Tonne
132:, as the metal value invariably exceeds the
1337:"How Can You Know If Gold is Fake or Real?"
1099:International Offshore Law & Affiliates
648:1618–1648). According to a 2017 study, the
1232:
1259:
1040:
1038:
762: – Quantity of refined metallic gold
271:, who adopted gold as the main metal for
1166:
779: – Unified coinage system in Europe
745:Euro gold and silver commemorative coins
552:
402:
215:
194:
38:
1193:GoldSilberShop.de (November 19, 2014).
1140:
1115:
1047:"How to Make Convincing Fake-Gold Bars"
93:Until about the 1930s, gold coins were
14:
1407:
1279:
1228:from the original on February 4, 2017.
1057:from the original on February 14, 2015
1035:
962:from the original on February 26, 2015
823:
650:assumed widespread practice of pirates
621:
355:a 100-kilogram (220 lb) gold coin
1379:US Mint: American Eagle Bullion Coins
1245:
994:
896:
894:
879:
808: – Former Chinese ingot currency
1361:(Coin and Currency Institute, 2003)
1153:from the original on March 16, 2023.
1130:from the original on March 10, 2023.
1044:
952:"The Biggest Gold Coin in the World"
124:. While modern gold coins are still
1294:from the original on April 16, 2018
1280:McAfee, Melonyce (August 9, 2012).
1205:from the original on June 22, 2015.
675:
344:
341:from the value of gold until 1971.
279:Middle Ages and Early Modern period
58:that is made mostly or entirely of
24:
1351:
1216:Wolfgang Graf (January 20, 2014).
974:
912:from the original on March 9, 2015
891:
25:
1436:
1372:
1282:"Why Olympians bite their medals"
1095:"Counterfeit gold coins and bars"
319:
136:. For example, the quarter-ounce
70:coins are pure gold, such as the
1401:at the website of The Royal Mint
1399:The Royal Mint: UK bullion coins
1167:Weisbaum, Herb (June 13, 2016).
845:"Monetary Episodes from History"
716:
702:
523:
498:
484:
469:
454:
440:
128:, they are not used in everyday
1329:
1306:
1209:
1186:
1134:
1109:
1087:
1069:
880:Lewis, Paul (August 15, 1976).
580:American Numismatic Association
548:
333:. In the United States, 1933's
82:. Alloyed gold coins, like the
988:
944:
924:
873:
851:
837:
831:"Gold coins – A Brief History"
66:), while most of today's gold
13:
1:
1394:US Department of the Treasury
1045:Gray, Theo (March 14, 2008).
1021:10.1088/0143-0807/36/4/045012
859:"Medieval money | Castellogy"
816:
392:
207:
1116:Sargent, Mike (April 2009).
1077:"Counterfeit Coin Detection"
190:
7:
1261:10.13140/rg.2.2.27019.08487
1001:European Journal of Physics
695:
640:) and plays (like the 1938
537:
417:Scandinavian Monetary Union
43:Gold coins for sale at the
32:Gold coins (disambiguation)
10:
1441:
1384:December 13, 2011, at the
756: – Investment in gold
541:
502:
396:
296:
282:
185:
29:
684:counterfeit, known as an
1141:Lafleur, Merlin (2009).
796: – Form of currency
682:St. Gaudens Double Eagle
632:), books (like the 1925
360:Canadian Gold Maple Leaf
1123:. Collectors Universe.
982:"Investment Gold Coins"
802: – Form of coinage
610:and tungsten is weakly
419:, which was based on a
311:Austro-Hungarian florin
289:Florin (disambiguation)
1388:at the website of the
1313:Roberts, John (2007).
1246:Manas, Arnaud (2017).
995:Manas, Arnaud (2015).
558:
515:HM Revenue and Customs
435:
228:
213:
130:financial transactions
47:
956:Perth Mint, Australia
754:Gold as an investment
556:
542:Further information:
503:Further information:
406:
397:Further information:
315:Guinea (British coin)
299:Florin (English coin)
297:Further information:
219:
198:
42:
1343:. November 14, 2012.
1325:on February 4, 2016.
1105:on January 29, 2013.
861:. September 22, 2018
777:Latin Monetary Union
644:which is set in the
462:Portuguese Gold Coin
335:Executive Order 6102
1013:2015EJPh...36d5012M
906:Royal Canadian Mint
622:Pirates biting gold
595:American Gold Eagle
531:American Gold Eagle
511:European Commission
464:, sixteenth century
372:Royal Canadian Mint
351:Royal Canadian Mint
339:uncouple the dollar
303:South German gulden
247:. The name of king
138:American Gold Eagle
118:commemorative coins
84:American Gold Eagle
76:Canadian Maple Leaf
27:Coin made from gold
1390:United States Mint
1357:Robert Friedberg,
885:The New York Times
710:Numismatics portal
669:David Wallechinsky
559:
436:
383:Gold Kangaroo Coin
229:
214:
86:and South African
48:
1367:978-0-87184-307-4
940:. March 27, 2017.
686:Omega counterfeit
646:Thirty Years' War
616:neodymium magnets
233:Ancient Near East
224:of Roman Emperor
155:are dominated by
95:circulation coins
16:(Redirected from
1432:
1425:Gold investments
1345:
1344:
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1326:
1321:. Archived from
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1101:. Archived from
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676:Numismatic fakes
591:specific gravity
568:depleted uranium
527:
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345:Large gold coins
331:Great Depression
257:Parian Chronicle
212:
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80:American Buffalo
21:
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984:. May 17, 2022.
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45:Dubai Gold Souk
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1298:February 16,
1296:. Retrieved
1285:
1252:ResearchGate
1251:
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724:Money portal
690:double eagle
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658:Tudor period
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612:paramagnetic
601:made from a
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549:Counterfeits
508:
505:Bullion coin
478:Double Eagle
448:Gold Guilder
376:
370:In 2012 the
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307:Baden gulden
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180:counterfeits
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142:denomination
126:legal tender
97:, including
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1178:January 24,
966:January 25,
916:January 25,
865:January 14,
800:Silver coin
783:Numismatics
733:Counterfeit
608:diamagnetic
432:paper money
367:in Berlin.
365:Bode Museum
273:their coins
172:commodities
1415:Gold coins
1409:Categories
817:References
603:crown gold
599:Krugerrand
587:Maple Leaf
393:Collecting
379:Perth Mint
237:Bronze Age
235:since the
201:Achaemenid
122:collectors
102:bracteates
88:Krugerrand
18:Gold coins
1029:117927529
425:Norwegian
353:produced
259:mentions
191:Antiquity
157:gold bars
114:investors
99:coin-like
72:Britannia
52:gold coin
1382:Archived
1292:Archived
1226:Archived
1203:Archived
1173:NBC News
1151:Archived
1125:Archived
1061:June 18,
1055:Archived
960:Archived
910:Archived
760:Gold bar
696:See also
572:tungsten
544:Fineness
538:Fineness
409:20-crown
269:Persians
245:Anatolia
199:Persian
164:fungible
1222:YouTube
1199:YouTube
1009:Bibcode
285:Guilder
261:Pheidon
249:Croesus
222:Solidus
186:History
176:density
116:and as
68:bullion
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413:Norway
313:, and
239:, but
168:spread
140:has a
106:dinars
78:, and
1319:ANACS
1128:(PDF)
1121:(PDF)
1025:S2CID
806:Sycee
387:tonne
265:Argos
253:Lydia
241:coins
220:Gold
204:Daric
64:karat
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1363:ISBN
1300:2020
1180:2023
1063:2008
968:2015
918:2015
867:2024
634:L'Or
570:and
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287:and
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120:for
112:for
104:and
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