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<p>[QUOTE=&quot;springfld.arsenal, post: 65176, member: 54&quot;]This is getting interesting.&nbsp; The Christie&#039;s item has Phillips screws which although patented in 1936 were only used in the auto industry at first-I&#039;m thinking they really didn&#039;t get into general worldwide use until late 1940s or 50s.&nbsp; Since Christie&#039;s seems to have missed on the dating, wonder what else they missed?[/QUOTE]</p><p><br /></p>

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