US LATE WWII PERIOD AAF ENLISTEDMAN’S PIN BACK “AIR CREWMENS” WING, NO HM, FROM OLD ARMY/NAVY STORES STOCK

US WWII AAF “AIR CREWMEN’S” P.B. WING, NO HM’S, APPEARS TO BE STERLING BUT NOT MARKED, REF 51/28/99, EXCELLENT