Earthshock - S19-E6
Corrected entry: Although the Cybermen view a clip of the second Doctor - taken from "The Wheel in Space" - the Cybermen refer to it as if it is taken from "Tomb of the Cybermen, a completely different Doctor Who/Cybermen story. (00:37:45)
Correction: The Cyberleader says that this is the form of The Doctor that foiled them in "Tomb of the Cybermen." The main point being to show which Doctor, not the actual event. As long as it's the second Doctor, any footage they have will do.
Captain Defenestrator