United States. Four Air Force Navigator/Observer Badges (now called Combat Systems Officer Badge)

Basic Badge (in silver-filled metal, maker marked "ANTAYA G.I." and marked "1/20 SILVER FILLED" on the reverse, measuring 76.5 mm (w) x 25 mm (h), dual push pins); Senior Badge (in silver-filled metal, marked "1/20 SILVER FILLED / KREW G-I" on the reverse, measuring 76.2 mm (w) x 33 mm (h), dual push pins); Master Badge (in silver-filled metal, marked "1/20 SILVER FILLED / KREW G-I" on the reverse, measuring 76.3 mm (w) x 36.3 mm (h), dual push pins); and Reduced-Size Basic Badge (in silvered metal, marked "VANGUARD 1V" on the reverse, measuring 51.5 mm (w) x 17 mm (h), dual push pins). Ranging from very fine to extremely fine.