WTB: Cygnet crane for Musicmaster horn

[Extremetito]

I'm looking for the crane bars and hanger to mount a Musicmaster horn on an Edison Triumph with a horizontal carriage (Diamond B).
I recently acquired the horn, and discovered that my existing crane set up will not work. I've also discovered that these cranes have become very scarce, and command premium prices--which I accept. Can anybody help, or point to any resources for this item?
Thanks
Richard