No Hallmark for this screw back insignia; this unit was part of the 89th ID in WWII.
341st Field Artillery Battalion distinctive unit insignia, circa WWII era. No hallmark on this screw back piece.
The 341st was part of the 89th Infantry Division in WWII and earned 2 battle stars toward the last months of the war.
Fine- Excellent condition.
From the Robert Borrell Artillery Collection.