This is former C-7A 61-2388 that was used by the CIA in Iran for flights along and across the Soviet Union border under project Ibex. For quite a while, this aircraft was in the museum in its original colour scheme and carrying Iranian Air Force markings and serial 553. Unfortunately, by early 2008 it had been repainted in this terrible colourscheme, temporarily with registration "EP-RAJ", but now without any registration. The aircraft carries texts referring to the Hekmat Saba Insurance company, presumably because that company sponsored the recent paint job.