That's what it's called apparently. After playing with an ompaa band while on tour with the band, my mum and I wanted a set of rotary valves. They just happen to be attached to a fancy flugal from germany. It's got a nice sound, but we just need to get the valves a bit quicker. We haven't a clue what we're doing with them, and after putting oil in various places, we're close to taking it to Octave Above for a service. The old thing needs it, but a polish has made it shine a bit more. Can anyone recommend anything rotary valve related to us? Cleaning, servicing, do we need to get fancier oils? And a little fyi, the silver band around the bell has writing on it that has been scratched out with what appears to be a pointy tool (wanna-be CSI). I can just make out 1940, Ni. 23 (supposedly number 23) Polizei, and a W. Ku something. Suggesting it's a stolen police Khulo Horn from 1940. Should be some fun!