This is a museum quality reproduction of the very rare 103rd Aero Pursuit Squadron Hat Pin for the overseas hat, it is approximately 7/8 of an inch wide of the famous full bonet Indian headdress in sterling silver and hallmarked sterling in a pin back. The squadron was established on June 30, 1918 and demobilized on December 11, 1918. But from March 15, 1916 until July 4, 1918 this was also the insignia of the French Army’s Lafayette Escadrille  SPA 124.  The SPA 124 reorgnaized as a French unit when the 103^rd was formed. As far as I can tell this is the only Squadron Pin used by two units. This pin was worn on the overseas hat along with rank and a collar prop.