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<p>[QUOTE="Oldhoopster, post: 7535378, member: 84179"]They're Roller marks. The parallel lines that keep a consistent thickness seem to occur on late 70s- 1982 cents.</p><p><br /></p><p>Improperly mixed alloys occur during ingot casting/cooling. The regions of minor alloy variations are going to vary in size and shape. As the ingot is rolled, these regions are going to stretch but they will vary in shape and width like the coin posted by [USER=107016]@VistaCruiser69[/USER] , not the consistent stripes on the OP coin.</p><p><br /></p><p>Think of rolling pasta. If there is something in the dough, it won't roll out in consistent parallel strips , there will be variation. If it's on the rollers, it will be constant</p><p><br /></p><p>My opinion[/QUOTE]</p><p><br /></p>
[QUOTE="Oldhoopster, post: 7535378, member: 84179"]They're Roller marks. The parallel lines that keep a consistent thickness seem to occur on late 70s- 1982 cents. Improperly mixed alloys occur during ingot casting/cooling. The regions of minor alloy variations are going to vary in size and shape. As the ingot is rolled, these regions are going to stretch but they will vary in shape and width like the coin posted by [USER=107016]@VistaCruiser69[/USER] , not the consistent stripes on the OP coin. Think of rolling pasta. If there is something in the dough, it won't roll out in consistent parallel strips , there will be variation. If it's on the rollers, it will be constant My opinion[/QUOTE]
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