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<p>[QUOTE=&quot;7Jags, post: 22253921, member: 78719&quot;]I have often wondered about how this coin was made. The Brits used to blanche (acid bath) the 0.500 planchets for the debased silver coinage beginning in 1920.</p><p><br /></p><p>This selectively leached copper from the surface layers so that when first struck the coin appeared to be of better silver. Then as the coin wore, it would often take on yellow, light brownish (ugly), and even somewhat greenish tinge on occasion.</p><p><br /></p><p>This coin has got to have greater surface silver content somehow, but nobody has explained it to me. It must be pickled or blanched I would have to guess somehow as plating does not work out too well or evenly on massive batches.</p><p><br /></p><p>I always thought the Mexicans were trying to hold on to their old silver peso even if in VERY debased form...</p><p><br /></p><p>&nbsp;I have a 1957 in MS67 PCGS and it is breathtaking. But doesn&#039;t add up to a gem Caballito! LOL.[/QUOTE]</p><p><br /></p>

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