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<p>[QUOTE=&quot;Conder101, post: 674362, member: 66&quot;]The key is to learn what different types of errors actually look like.&nbsp; For example once you know what a doubled die looks like, how to recognize it, and how to tell it from Machine doubling damage or double striking, then if you see a coin design you have never seen before that was struck from a doubled die you will be able to recognize it for what it is.</p><p><br /></p><p>Most error types are easy to learn and will look similar on coins from any country.&nbsp; (I don&#039;t have to know what a coin is supposed to look like to recognize a clipped planchet, an off-center strike, or a cud die break for example.)&nbsp; Some types such as design errors say where a letter or a punctuation mark was left out you probably wouldn&#039;t notice unless you were really familiar with the particular coin design.&nbsp; For example the wide AM Lincoln cents.</p><p><br /></p><p>Learning how coins are made is very important.&nbsp; If you understand exacly how a coin is formed, when you see something odd on a coin you can sart trying to figure out if it is possible for it to be created as part of the minting process, and if not then it is almost certainly post minting damage.[/QUOTE]</p><p><br /></p>

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