Steel, bronze plating and silver plating, enamels. Measures 31.5 mm tall, 30.8 mm wide. Nice design incorporating a helm with detailed depiction of a battleship under Soviet naval flag. The writing "USSR OSOAVIAKhIM" refers to huge "volunteer" paramilitary organization that was technically in charge of issuing the badge. Nevertheless, as evident from the artwork and available photographic records, it was probably a purely military award to best Navy sailors.
Very fine to excellent condition. The enamel on the flag shows buffing and surface scratches but no chips or repairs. The enamel on the bottom plaque is perfect. Fine details of the battleship, the waves and the helm are completely intact. Some of the original silver plating above the layer of bronze plating is still present on the reverse. The screw post has been reduced to about 4 mm but is still functional. Comes with original screw plate marked "D.S.O. Burevestnik".