Second War American Naval Insignia Group

A Second War American Naval Insignia Group; Naval Aviator Badge (sterling silver gilt, maker marked with the Hilborn-Hamburger HH eagle insignia, marked "STER" (Sterling) and "+ 1/20 10K" (Gold) on the reverse, 23.2 mm x 70.5 mm, horizontal pinback); two Officer's Prop and Wings Collar Insignia (two-piece construction, bronze and silver, 20.8 mm x 29 mm, dual screwbacks); and Navy and Marine Corps Presidential Citation (bronze frame with a royal blue ribbon, marked "AG-I" on the reverse, 15.7 mm x 37 mm, dual push pins). Extremely fine.