This is a side action rotary valve soprano flugel made by Joseph Lidl, Brunn Czechoslovakia. c.1895.  Lidl made brass instruments from 1895 to 1945  in Brunn (now Brno CR). It looks and sounds much like a Trumpet, but it has overall gradual conical tubing of a Flugel - from leadpipe to bell flare. It was most likely used in the military bands of the Austro-Hungarian Empire. The flugel employs clock work sprung mechanical valve linkage. The inscription on the German silver garland reads:                                 K. u. K.