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<p>[QUOTE=&quot;Publius2, post: 24487430, member: 105571&quot;]The generally accepted term for these are &quot;adjustment marks&quot;.&nbsp; In the early days of the US Mint, quality control often lacked a certain expertise so the unstruck planchets were sometimes under weight or overweight.&nbsp; So, mint workers were required to weigh each and every unstruck planchet.&nbsp; When underweight there was nothing to do but throw them back in the melting pot (see p.s. below).&nbsp; But when a planchet was overweight, the worker would take a file and strike off some of the metal, a bit at time while reweighing until they cut it down to the proper weight.&nbsp; Now the blank planchet had file marks on it.&nbsp; When the dies raised the impression, often the metal could not flow enough to fill all the file marks.&nbsp; These are called &quot;adjustment marks&quot;.&nbsp; I have only seen and heard of these on silver and gold coins, never copper coins.&nbsp; They are an as-minted condition and will never result in a coin receiving a details grade since the marks are not damage.&nbsp; However, many people will not pay as much for a coin with adjustment marks.&nbsp; I for one find a certain charm and historical interest to them.</p><p><br /></p><p>P.S.&nbsp; In the very early days of the mint, there were some rare and more-or-less one-off attempts to increase the weight of a slightly underweight planchet by installing a solid silver plug in the coin.[/QUOTE]</p><p><br /></p>

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