This is in fact the '22+01' of the German AF. It is preserved in the Technik Museum in Speyer, Germany. Today it wears the colors of '26+63', a Starfighter from the German Navy. The real '26+63' went to the Greek AF.
The Buran prototype OK-GLI, shown in the Technik Museum Speyer, was built in 1984 and was used for testing gliding-flight and landing after re-entry into the atmosphere. 25 atmospheric flights were made between 1984 and 1989.
This MiG-23BN, preserved at Technik Museum Speyer, has been in action in the former GDR, up to take-over of the East German army by the Federal Armed Forces in 1990. It is sporting a special c/s of the Federal Air Force.