Two Second War Royal Canadian Air Force (RCAF) Pins

First pin has a three-piece construction, sterling silver with blue enamels, hallmarked and marked "STERLING" on the reverse, 16 mm x 46.7 mm, horizontal pinback. Second pin has a two-piece construction, sterling silver gilt with red and blue enamels, maker marked "BIRKS" and marked "STERLING" on the reverse, 14.3 mm x 40 mm, horizontal pinback. Intact enamels, extremely fine.