This superbly detailed animatronic headpiece was used in the episode Phases for closeups in the scene in the alleyway with Angelus and later in the Bronze scene. The jaws and eyes could be controlled electronically while the piece was worn by the actor.
This mask does not seem to have been used beyond the episode, a great shame as it is by far superior to the Oz masks in later appearances.
Sadly the foam latex has deteriorated over the years, and I am undecided if I wish to have it further restored.
https://www.youtube.com/watch?v=dP9vyrPkxCE&t=1s
