1915 - 1916, three cards from sailors by airship multiples, in detail letter cancel \"airship band No 12\" from Br++ssel 19.7.15, \"of Wuerttemberg airship band no. 12\" from Namur 20.4.16 and single circle postmark \"weather station of the Air ship harbor Legnica\" from Legnica 19.6.16, all superb