Buguruslan School of Civil Aviation Pilots (BLU), graduate badge, circa 1960s-70s.
In brass, nickel plating and enamels; 51.3 x 26.3 mm. Very complex, five-piece construction badge: the plaque, sky blue globe, Aeroflot wings and the airplane are all separate parts attached to the diamond-shaped base. The screw post is slightly over 6 mm long, probably slightly shortened but fully functional.
Comes with a period screw plate which is probably original to the badge.