Two American Naval Aviator Collar Badges

First badge is sterling silver with a gold-coloured gilt, marked "1/20 10K GF" (10K Gold Filled) and marked "STERLING" on the reverse, 14.7mm x 42 mm, horizontal pinback. Second badge is sterling silver, maker marked with an "H" inside a triangle and marked "STERLING" on the reverse, 12 mm x 38.7 mm, horizontal pinback. Extremely fine.