United States. A Naval Aviator Badge, by Hilborn-Hamburger, c.1925
In sterling silver gilt, maker marked with the Hilborn-Hamburger "HH eagle" insignia, marked "STER" (Sterling) and "+ 1/20 10K" (Gold) on the reverse, measuring 70.2 mm (w) x 23 mm (h), horizontal pinback, very light contact, near extremely fine.

