The canton of Basel existed as a federal place from 1501 to 1798 or as a canton from 1803 to 1833 and was an undivided member of the old Confederation and then the Swiss Confederation .
Two half-cantons have existed since the cantons of Basel were separated in 1833 :
Coat of arms of the historic canton of Basel (and today of Basel-Stadt)
Unofficial joint coat of arms of both Basels
Canton coats of arms of both Basels (from the dome of the Federal Palace )
Map of the separation of the Basel cantons in 1832/33