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<p>[QUOTE=&quot;Debora, post: 407647, member: 1476&quot;]That doesn&#039;t appear to be a b&amp;w photograph on my monitor.&nbsp; Think you should read this.</p><p><br /></p><p><a href="https://en.wikipedia.org/wiki/Duotone" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://en.wikipedia.org/wiki/Duotone" rel="nofollow">https://en.wikipedia.org/wiki/Duotone</a></p><p><br /></p><p>Also IMO there&#039;s a bit of overthinking here.&nbsp; You&#039;ve a vintage photograph of a 1931 International-style building.&nbsp; Logic would place it in the pre-1940s category.&nbsp; If you&#039;re off by a few years, will it really make a difference?&nbsp; I would think what was more important than dating photo is identifying the photographer.&nbsp; That&#039;s something that would add value.</p><p><br /></p><p>Debora[/QUOTE]</p><p><br /></p>

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