Unable to read the serial from this photo, but by using the first readable digits and the Soviet Transports files on this website, I am sure this is what they describe in their comments for 5-8205. A radar blister, and a 7 logo in the tail. Photographed while taking off onboard the Saha Boeing 707 from Mehrabad.
Very last opportunity to fly with a passenger Boeing 707 was in March 2013, with services ending in early April. I joined a flight with a group of pilgrims to the city of Mashad, near the Afgan border. The Iran Air force code 310 still on the nose of the airplane, the full registration is on the nosewheel door.