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<p>[QUOTE=&quot;springfld.arsenal, post: 358754, member: 54&quot;]The fact that the ring is made of stainless steel cuts the possibilities way down, since the ring would be machined, not cast from a pattern.&nbsp; If it was made using CNC milling machines it dates from say 1970’s or later.&nbsp; If made on a manual mill or hand-filed it could date from whenever stainless first became available to the public.&nbsp; It takes more knowledge than mine to tell what method was used to manufacture it. The unusual gap in the thin part of the ring may help prove that it was hand-made from some salvaged item, assuming that gap is very uncommon in such rings.&nbsp; I know almost nothing about rings.[/QUOTE]</p><p><br /></p>

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