Three United States Air Force (USAF) Air Traffic Control Badges

United States; Each is silvered metal with a 1/20 silver filling, maker marked with the Vanguard insignia, marked "V-21" (Vanguard code) and marked "1/20 SIL. FILLED" on the reverse, Basic Badge is 18.8 mm x 41.3 mm, Senior Badge is 26.5 mm x 41 mm, Master Badge is 29.2 mm x 41 mm, both push pin points intact on all three, tape resisdue on the reverse from previous board mounting, extremely fine. Footnote: From the collection of the late author of Eagles Recalled, Warren Carroll.