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1808 TH Mexico (Spanish Colony) 8 Reales; KM# 109: This looks Cast, to me.
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<p>[QUOTE="jgenn, post: 3513766, member: 78525"]I am not saying that the OP coin is genuine but I will observe that the example shows stress lines usually associated with the striking of an improperly annealed planchet, so this is perhaps evidence of a struck coin and not a cast coin. The pitting does not look like casting bubbles to me, more like an environmental effect. The process of converting an ingot to a fillet to a round blank and then into a planchet involved several <a href="http://goccf.com/t/329523&whichpage=3#2843904" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://goccf.com/t/329523&whichpage=3#2843904" rel="nofollow">acid baths</a> -- if genuine, perhaps it just sat in one too long. However, you can see that most of these pits occur within patches of darker toning so maybe this is the result of a very inexpert dip.[/QUOTE]</p><p><br /></p>
[QUOTE="jgenn, post: 3513766, member: 78525"]I am not saying that the OP coin is genuine but I will observe that the example shows stress lines usually associated with the striking of an improperly annealed planchet, so this is perhaps evidence of a struck coin and not a cast coin. The pitting does not look like casting bubbles to me, more like an environmental effect. The process of converting an ingot to a fillet to a round blank and then into a planchet involved several [URL='http://goccf.com/t/329523&whichpage=3#2843904']acid baths[/URL] -- if genuine, perhaps it just sat in one too long. However, you can see that most of these pits occur within patches of darker toning so maybe this is the result of a very inexpert dip.[/QUOTE]
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1808 TH Mexico (Spanish Colony) 8 Reales; KM# 109: This looks Cast, to me.
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