Bidspirit auction | Worldwide Pioneer Flights - France

Worldwide Pioneer Flights - France - GROUP OF MILITARY AVIATION ITEMS: 1915-23, 14 cards, letter cards and covers, each one representing free-frank delivery, including correspondences of Nieuport French Aeroplae Company, Aviation Units in Cote d'Or, London, Maroc, Marsala, Venice and others, mainly fresh and F/VF, Est. $500-$600