Russia, Empire, Committee for the Collection of Private Funds for the Benefit of the Air Force Jetton, silver and enamel, featuring an oak and laurel wreath upon which has been superimposed a Russian shako of Nicholas I period and an aeroplane, unmarked, multi-piece construction, with screwback suspension, the silver backplate with silver mark, top blue enamelled riband loose, otherwise nearly extremely fine, scarce £400-500