Keyed bugle.

Technical description: Copper with brass garland, stays, mouthpiece receiver sheath, chimneys and keywork. A finger-rest passes over the 3rd key from the bell. The 5th key from the bell is mounted on a bridge for operation by the left hand.The keys with leaf springs SATK, the spring ends running in channels on the keymounts.The open-standing bell key has a screw adjustment to regulate opening.With…