2010. Complete set (4 values) ”100-Year Anniversaries of Aviation” in IMPERFORATE single stamps showing ”First regular passenger service with airships: DELAG Zeppelin LZ-7”, ”Altitude record set by Hubert Latham (1883-1912), flight pioneer: monoplane Antoinette VII”, ”First crossing of the English Channel: airship Clément-Bayard
2”, and ”First flight of a female pilot: biplane with Raymonde de Laroche, actually Elise Roche (1886-1919)”. Mint, nh. In all 4 imperforate stamps.