Valve horn with crooks

Anonymous Bohemian valve horn with crooks for:
F, E flat, D , D flat, C, B, Bb and A!
Two tuning slides. One makes F horn the other E flat and lower. Valve slides can be pulled a long way! 
Valves okay, there are some dents. I left it in original state. With the original mouthpiece. Inlet crook is wide.