The TARDIS belonging to Chancellor Goth was stolen by the Master after he killed Goth. It was a later version than the Type 40s.
The Master used its identification to pass through the transduction barrier on Tersurus and steal information on the Dimensioneers. Afterwards, he disguised it as a police box to mimic the Doctor's TARDIS and fool people into thinking he was a future incarnation of the Doctor. (AUDIO: Dominion)