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<p>[QUOTE=&quot;MerlinAurelius, post: 2696567, member: 84384&quot;]The <a href="https://en.wikipedia.org/wiki/Ichibuban" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Ichibuban" rel="nofollow">Ichibuban</a> (一分判) could be either made of silver or gold, in which case it was a quarter of a Koban. The gold Ichibuban of 1714 (佐渡一分判金) had a weight of 4.5 g, with 85.6% of gold and 14.2% of silver. The silver Ichibuban from 1837 to 1854 (<a href="https://en.wikipedia.org/wiki/Tenp%C5%8D" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Tenp%C5%8D" rel="nofollow">Tenpō</a> Ichibugin, 天保一分銀, &quot;Old Ichibuban&quot;) weighed 8.66 g, with an alloy of 0.21% gold and 98.86% silver.<a href="https://en.wikipedia.org/wiki/Tokugawa_coinage#cite_note-museum-4" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Tokugawa_coinage#cite_note-museum-4" rel="nofollow">[4]</a></p><p><br /></p><p><font size="4"><b>Nishuban and Isshuban[<a href="https://en.wikipedia.org/w/index.php?title=Tokugawa_coinage&amp;action=edit&amp;section=7" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/w/index.php?title=Tokugawa_coinage&amp;action=edit&amp;section=7" rel="nofollow">edit</a>]</b></font></p><p>There were then <a href="https://en.wikipedia.org/w/index.php?title=Nishuban&amp;action=edit&amp;redlink=1" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/w/index.php?title=Nishuban&amp;action=edit&amp;redlink=1" rel="nofollow">Nishuban</a> (二朱判) and <a href="https://en.wikipedia.org/w/index.php?title=Isshuban&amp;action=edit&amp;redlink=1" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/w/index.php?title=Isshuban&amp;action=edit&amp;redlink=1" rel="nofollow">Isshuban</a> (一朱判) small denominations of silver or gold, before getting to the <a href="https://en.wikipedia.org/wiki/Japanese_mon_(currency)" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Japanese_mon_(currency)" rel="nofollow">Mon</a> or <a href="https://en.wikipedia.org/wiki/Japanese_yen#Coins" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Japanese_yen#Coins" rel="nofollow">Sen</a> bronze coins.</p><p><br /></p><p>From 1853 to 1865, the silver Isshuban (<a href="https://en.wikipedia.org/wiki/Kaei" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Kaei" rel="nofollow">Kaei</a> Isshugin, 嘉永一朱銀) weighed 1.88 g, with an alloy of 1.7% gold, 98.7% silver and 1.12% copper.<a href="https://en.wikipedia.org/wiki/Tokugawa_coinage#cite_note-museum-4" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Tokugawa_coinage#cite_note-museum-4" rel="nofollow">[4]</a></p><p><br /></p><p>I have mostly Nishuban as gold bars in the pictures but the above passage does not talk about their gold content.&nbsp; I assume it is similar to the gold Ichibuban.&nbsp; I know it is a mixture of gold and silver.[/QUOTE]</p><p><br /></p>

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