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<p>[QUOTE=&quot;Ladybranch, post: 113518, member: 44&quot;]BTW, meant to add to the above reply, while wandering around trying to spot something similar, I stumbled on websites dating Carl Zeiss serial numbers. The s/n 192,321 on this instrument on those websites dates to 1912!!! That was a big surprise until I realized the s/n listed were for Zeiss lenses. </p><p><br /></p><p>Charts of Carl Zeiss are at the bottom of the page:</p><p><a href="http://motamedi.info/serial.htm" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://motamedi.info/serial.htm" rel="nofollow">http://motamedi.info/serial.htm</a></p><p><br /></p><p>&quot;173,418-200,520&nbsp; &nbsp; &nbsp;&nbsp; 1912&quot;</p><p><br /></p><p>--- Susan[/QUOTE]</p><p><br /></p>

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