on 14 june 1966, the benki kuu ya tanzania (bank of tanzania) introduced notes for 5, 10, 20 and 100 shillingi (also denominated in shillings on the first series of notes). the 5 shillingi note was replaced by a coin in 1972. 50 shillingi notes were introduced in 1985, followed by 200 shilingi in 1986, 500 shillingi in 1989 and 1000 shillingi in 1990. the 10, 20, 50 and 100 shillingi notes were replaced by coins in 1987, 1990, 1996 and 1994, respectively. 5000 and 10,000 shillingi notes were introduced in 1995, followed by 2000 shilingi in 2003. a new series of notes came out in 2011. these new notes include many security features that prevent counterfeiting.