4th Air Force Pin (sterling silver gilt with red, white and blue enamels, marked "STERLING" on the reverse, 16.7 mm x 18.8 mm, vertical pinback); and 6th Air Force Pin (sterling silver gilt with red, white and blue enamels, marked "STERLING" on the reverse, 19.5 mm x 22 mm, vertical pinback). Scattered gilt wear, near extremely fine. (C:12