Yugoslavia, Kingdom. An Army Air Service Observer's & Navigator's Badge, By Karnet-Kisely Auction the obverse with a circular

the obverse with a circular enameled medallion depicting a hand-painted Brandenburg crowned eagle

The front center of the shako also has a small

mounted to its original triangular military ribbon with hook and eye)

marked "925" (silver) and date marked "A10" (1975) on the underside of the hinge

measuring 304 mm (w) x 253 mm (h))

Yugoslavia, Kingdom. An Army Air Service Observer's & Navigator's Badge, By Karnet-Kisely Auction the obverse with a circularSilver, marked "900" (silver), maker marked "KK" (by Czechoslovak manufacturer Karnet Kisely) and with very low number stamped "15" on the reverse, 50. 3 mm x 66. 3 mm, dual screw backs (one retaining nut missing), light contact and surface wear, very fine. A scarce badge.