2 thoughts on “Cerveny, BB flat helicon, 4 rotary, ca.1960”

  1. alastair stewart's avatar alastair stewart said:

    Hello,

    I have one of these – its an amazing instrument – I’m having a few peoblems with the valves and specifically the pads that control the amount of travel the rotors have.

    Any ideas how I might remedy this?

    With kind regards,

    alastair.stewart74@gmail.com

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