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<p>[QUOTE=&quot;jgenn, post: 26130849, member: 78525&quot;]While I don&#039;t doubt that overweight coins from roller presses had their edges filed I believe the term &quot;adjustment marks&quot; typically refers to those made on the surfaces of the blanks prior to being struck with a screw press. The proper weight of a coin from a roller press could only be measured after it was struck and subsequently stamped from the strip and you wouldn&#039;t run a file over the surface at that point.&nbsp; But you could measure a blank stamped from a strip for proper weight prior to being struck in a screw press.&nbsp; In this case, you would avoid filing the edge so that the edging mill could impress a full design and the impact from the screw press would normally obliterate the file marks across the blanks&#039; surface.&nbsp; </p><p><br /></p><p>The mill that flattens the strip can also leave parallel grooves on a strip so you might see such marks on weakly struck coins from both roller and screw presses but these wouldn&#039;t be considered adjustment marks.[/QUOTE]</p><p><br /></p>

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