[milandro]

During the years I have been able to identify several horns and in particular a number of R&C stencils .

This one I have ( I have had two in the past one engraved with Triumph the other Rampone & Cazzani and now this one with Kingsley de Luxe Professional ) at the moment and it shows this very specific feature , this Thumbrest.

There are other id features too but this one will look very evident. When you find something like this this is a R&C from the '60 or '70.

 

[JayeLID]

Desidera also used that detail for a time....I would guess they sourced the same part.