For the story '' The Tomb of the Cybermen '' one of the Talkers was converted to be used as the Cybercontroller.  

         This left only ONE talker , so any sequence that required a cyberman to talk or open its mouth, as in the sequence    

                           above , where the Cyberman is blasted in the face and emits smoke , is the helmet I now own.

        ALL IMAGES ARE COPYRIGHT (c)2008 MICK HALL/ DOCTOR WHO COPYRIGHT BBC (c)