The highest denominated Yugoslavia banknote. Yugoslavia went through a hyperinflation period from 1989-1994. The impact of the hyperinflation was substantial: A novi dinar in 1994 was equal to 1027 pre-1990 dinars.
These notes are circulated.
Serial numbers of notes you order will not match the one in the image. If you buy multiple uncirculated banknotes, they will almost always have sequential serial numbers.