Airships, Stamp World London 1990, Helvetia 1990

Set of 7 stamps.

100d, Henry Gifford, 1871.
200d, Lebandy, 1910.
300d, Graf Zeppelin.
500d, R-101, 1930.
1000d, Soviet, 1936.
2000d, Tissandier, 1883.
3000d, US Navy.