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<p>[QUOTE=&quot;satootoko, post: 19845, member: 669&quot;]Ever hear of Spadone numbers for oriental coins?&nbsp; The term comes from the <i>Catalog of Modern Japanese Korean Manchukuo Coins</i>, published in 1960 by J.G.Spadone, in which he assigned numbers to individual coin designs from those areas.</p><p><br /></p><p>I thought forum members might profit from some expert advice quoted from pages 9-10 of his delightful little tome:</p><p><br /></p><p><u><b>CLEANING COINS:</b></u> New coins should not be cleaned as they will lose their original mint lustre.&nbsp; Circulated coins should be cleaned periodically like a gun, for preservation, attractive display and individual value.&nbsp; (He was a military man, after all. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie8" alt=":D" unselectable="on" unselectable="on" /> )</p><p><br /></p><p><b><u>COPPER COINS</u></b> may be cleaned with liquid metal polish.&nbsp; If one coin is cleaned, all should be cleaned for uniformity of color.</p><p><br /></p><p><u><b>SILVER COINS</b></u> are best cleaned with baking soda and water.&nbsp; Add water until a paste is formed.&nbsp; Rub the coin with the paste, then dry with a soft cotton cloth.&nbsp; Continue this process until the coin is clean.</p><p><br /></p><p>The last hope for a bad coin is a brass wire suede shoe brush to remove&nbsp; the difficult dirt.&nbsp; This may not scratch the coin noticeably if brushed fast enough. <img src="http://forums.collectors.com/i/expressions/yikes.gif" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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