Continuity mistake: A large blue vase in Galba's study keeps moving itself into different positions on the table. Several shots later, it's gone altogether. (00:20:00)
Time Tunnel (1966)
1 continuity mistake in The Ghost of Nero - chronological order
Starring: James Darren, John Zaremba, Robert Colbert, Whit Bissell
Factual error: When Ulysses opens his mouth while speaking, modern dental fillings are in his teeth.
Visitors From Beyond the Stars - S1-E18
Trivia: The Time Tunnel Homing Beacon used in "The Revenge of Robin Hood" episode is hanging on the bulkhead by the door of the aliens' spaceship.