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<p>[QUOTE=&quot;mlov43, post: 1599154, member: 16729&quot;]I recently bought at auction this South Korean 1990 Five-hundred Won coin.&nbsp; It has fifteen gouges drilled out of the obverse.&nbsp; I&#039;m pretty sure this was one of those coins that criminals in Japan would use to put in Japanese vending machines as a &quot;fake(?)&quot; 500 &#039;Yen&#039; coin in order to get back a REAL 500 Yen coin (which is worth 10 times the value of a S. Korean 500 Won coin) by pressing the &quot;reset&quot; (coin return) button on the machine.&nbsp; This happened around the late 1990s and in August of 2000, the Japanese Mint changed the design of their 500 Yen coin because of this activity.</p><p><br /></p><p><b>What is such a coin called in numismatic terms</b>?&nbsp; I don&#039;t think that it&#039;s simply a &quot;counterfeit coin&quot;, but a REAL coin, altered in order to substitute for another nation&#039;s coin, and utilized to make an (illegal) profit in a vending machine.&nbsp;&nbsp; What are such coins called?&nbsp; What would a grading company call it? </p><p><br /></p><p>Any help would be appreciated.[ATTACH]224640.vB[/ATTACH][/QUOTE]</p><p><br /></p>

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