The above two photographs illustrate the thinned wood head which is fitted to the Rudall Carte Flute Number 7839. The embouchure shape is the typical oval shape of that era.
It has a silver lining.
The fitting to the body is via a silver lined tenon joint on a cork lined body joint. The modern wood flutes tend to have tenon joints similar to metal flutes and a fine photograph of this may be seen on Robert Bigio's Web site
The above photograph and notes are as accurate as my knowledge on the subject permits.
If anything above is factually incorrect, or if anyone can usefully improve or add to the above notes then please feel free to email me at john@fluteweb.net