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<p>[QUOTE=&quot;Pete Apple, post: 3547721, member: 103982&quot;]The fact that these lines can be seen going across the bust makes me think that they are from the roller machines used to roll out the metal stock to the proper thickness. This means that they are on the planchet prior to the strike. These striations are usually obliterated by the pressure on accurately spaced dies. However, if the dies were too far apart or if the pressure wasn&#039;t sufficient enough then the metal isn&#039;t pushed into the highest points of the coin leaving the striations intact. I think the would be called &quot;Planchet Striations&quot;.</p><p><br /></p><p>I agree with environmental discoloration. Were it missing clad, weight would be less than normal. Quarter weight missing one clad layer = 4.71 g +/- 0.347 g; missing two clad layers = 3.75 g +/- .467 g.[/QUOTE]</p><p><br /></p>

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