The skin represents the MiG-25RBT from the Bulgarian Air Force b/n 754 from the 26th Reconnaissance Air Base in Dobrich.
Bulgarian Air Force acquired 4 MiG-25s (3 RBT variant and 1 RU conversion trainer), these aircraft were used for photo reconnaissance and ELINT tasks. In 1991 these aircraft were exchanged with USSR with 5 MiG-23MLD.