United States. An Air Service Bombardier Wing, C.1918 certificate_of_authenticity effective September 29

effective September 29

reverse depicts central five-pointed star with a pebbled finish superimposed on a crossed rifle and sabre

the cap is flanked on each side by bronzed pebbled buttons holding in place a decorative chinstrap constructed of braided and twisted silver aluminum bullion wire

consisting of a tunic constructed of black wool

die-hole at the top for uniform attachment

United States. An Air Service Bombardier Wing, C.1918 certificate_of_authenticity effective September 29Four piece construction, in sterling silver, marked "STERLING" in four locations on the reverse, measuring 78. 5 mm x 23. 8 mm, horizontal pinback, extremely fine.