Penny-farthing
From Tardis Wiki, the free Doctor Who reference
Penny-farthings were a form of bicycle.
While strapped into the Morok mind-reader, the First Doctor was questioned by Lobos on how he came to Xeros. He thought of a penny-farthing and an image of one appeared on the device's screen. (TV: The Space Museum)
The Eleventh Doctor stated that he once saw a tandem penny-farthing. (COMIC: The Sound of Our Voices)
