Rallye Aerien Du Cervin Sion 1948 Air Rally in Switzerland badge

A scarce original circa 1948 badge from the 'Rallye Aerien Du Cervin Sion Switzerland'; oxidized silver example depicting an embossed mountain scene with aeroplanes flying around slopes; the reverse impressed with maker's details to the pin 'Huguenin Locle'. Very good condition, retaining original pin fitting, minimal wear. Height 25mm.