Sliders: The Dimension of Continuity
Sorcerer Taxi License
Sliders DoC   Artifacts   Props

Didn't see this prop in the episode? It was there for filming, but was edited out for what should be obvious reasons. An interesting insight is given by the prop, though. Apparently the Sorcerer had such absolute control that he was even the ultimate authority on taxis.

The prop was hanging in the taxi in the same position as in the Pilot episode, and it was framed in a small silver frame with a glass front.

Sliders DoC : Artifacts : Props : Sorcerer Taxi License