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<p>[QUOTE=&quot;Elen Beattie, post: 4448565, member: 18081&quot;]I did a quick search and found this which is likely for the unusual joint mechanism on the back? Perhaps this brooch is missing part of it. The patent is in 1943 so perhaps mine is late 30s, early 40s? Or perhaps I have found the wrong patent entirely lol</p><p><br /></p><p>[ATTACH=full]382508[/ATTACH][/QUOTE]</p><p><br /></p>

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