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<p>[QUOTE=&quot;robinjojo, post: 4593295, member: 110226&quot;]I&#039;ve been reading about the various patinas bronze coins can have, both natural and artificial, and a I would like opinions about the coin below.</p><p><br /></p><p>I&#039;ve had this coin for several years now, sitting in an obscure corner of a cabinet. It is a sestertius of Caracalla, one depicting Asclepius and the serpent on the reverse.</p><p><br /></p><p>This coin has a surface of medium dark bronze and very dark brown, with the black areas showing corrosion.</p><p><br /></p><p>I don&#039;t see any signs of cleaning marks, but it might have been cleaned chemically.</p><p><br /></p><p>So, the question that I have is whether the patina would be considered &quot;Tiber&quot; with corrosion, or would it be considered a corroded coin that has been cleaned at some point and is starting to tone to darker shades?</p><p><br /></p><p>This coin weighs 20.0 grams&nbsp; Overall the strike is good.</p><p><br /></p><p>28 mm., 2 h.</p><p><br /></p><p>[ATTACH=full]1137407[/ATTACH][/QUOTE]</p><p><br /></p>

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