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<p>[QUOTE=&quot;GDJMSP, post: 207206, member: 112&quot;]It was due to a hub design change.</p><p><br /></p><p>1970-1972 Obverse revised, higher relief portrait</p><p>&nbsp; Virtually identical to the above, but appears to be higher relief to me.</p><p>&nbsp; Not noted in reference books, excepting the 1970-S high vs low 7.</p><p>&nbsp; Note how some collectors use the low relief of the lettering as diagnostic</p><p>&nbsp; for the 1970-S high 7 (not reliable, since an overpolished low 7 die</p><p>&nbsp; will also have low relief lettering)</p><p><br /></p><p>1973 Obv &amp; Rev revised, FG larger</p><p>1974-1982 Obv? &amp; rev revised, FG smaller</p><p>1982-1985 Zinc, with revised obverse</p><p>&nbsp; Color changes to pink-red.&nbsp; Full red bronze vs copper-coated zinc cents</p><p>&nbsp; are very obviously different colors when viewed under a good light source.</p><p>&nbsp; All of the combinations of die changes and planchet changes exist.[/QUOTE]</p><p><br /></p>

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