Located in an unlit area of the exhibit hall, it took a 3-minute exposure time and some Photoshop magic to get the photo up to par. SOBEH (Stichting voor de Ontwikkeling en Bouw van een Experimenteel Hefschroefvliegtuig) was founded in 1952 to develop a helicopter. Ater the H-1 followed the H-2 and an improved model, the H-3 Kolibrie was built in series by NHI. Unfortunately the aircraft wasn't a succes and production was halted in 1961 after a total of 11 had been built. The aircraft in the photo was produced by SOBEH and registered between December 1954 and March 1958. Transferred to the TU Delft and later to the HTS in Haarlem. To the museum in August 2001.