Type 1

The  TARDIS was an early prototype created by the elders of ancient Gallifrey. It was poorly designed, dangerous to operate and difficult to start. Some of them had minds of their own, with a history of escaping and roaming the universe. (PROSE: Heart of TARDIS) The Eleventh Doctor helped Rassilon with the first Type 1 TARDIS, and piloted it on its first flight through the Time Vortex. (COMIC: The Lost Dimension)

The Second Doctor discovered an old, decrepit woprat on a type-one TARDIS in an Avatar universe. (PROSE: Heart of TARDIS)