Fahrner hallmarked many of his rings... This I think just has the popular design of the era 'Art Deco'.. - Almost reminds me of the Skull with Rivet ring!!
, Whats really interesting is,, ,,,that sure looks like barb wire around the cartouche of the ring!! Has initials 'PM' [?] and could be his prisoner number underneath!! I really think that is a POW or camp inmate ring!!!
