15 1/2 x 7 1/2 x 5 1/2 in. regulation single twist bugle comprised of copper body with brass mouthpiece, connecting tubes, and floating rim (overall dark patina, wrinkling at the bell and dents throughout are indicative of hard field use). “Klemm & Bro. Philada.” is engraved in script on the brass-floating rim of the bell, which indicates early contract manufacture. Later Klemm contracts were of European manufacture and were stamped with block letters higher up on the copper body of the bugle.