JBaird Posted July 30, 2015 Share #1 Posted July 30, 2015 I recently acquired a US Navy grouping that had an interesting two-piece visor cap badge with a hard to read maker's mark. Through this forum and looking through the book "US Silent Service", it was found the maker's mark was that of J O'Brian Badge Company. I noted in other forums that J O'Brian mostly made aviator's wings? What I have not been able to determine is if this is a "rare" maker's mark not typically seen on hat devices? Link to comment Share on other sites More sharing options...
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