After World War I, Austria-Hungary broke up into many states and its southeastern portion merged with Serbia to form the KSCS. The krone replaced the Austro-Hungarian krone at par on November 12, 1918. It circulated alongside the Serbian dinar in Bosnia and Herzegovina, Croatia and Slovenia with an exchange rate of 1 dinar = 4 kronen. The exact date at which the krone ceased to circulate is unclear, with one source indicating that the krone was still in circulation at the end of 1922.
Initially, the krone was made up of overprinted or overstamped Austro-Hungarian banknotes in denominations of 10, 20, 50, 100 and 1000 kronen. The stamps on 10, 20 and 50 kronen were tri-lingual (Serbian, Croatian, and Slovenian), while stamps on the 100 and 1000 krone notes could be any of the three languages.
Later, the Ministry of Finance of the KSCS issued specific "krone on dinar" notes, which were printed as dinar and overprinted with krone at the ratio of 1 dinar = 4 kronen. Denominations issued were 2, 4, 20, 40, 80, 400 and 4000 kronen on ½, 1, 5, 10, 20, 100 and 1000 dinara. Only the 2 kronen on ½ dinar and 4 kronen on 1 dinar had variants without the overprint. It is as yet ambiguous as to whether the overprinted version was issued before or after.
- Pick, Albert (1994). Standard Catalog of World Paper Money: General Issues. Colin R. Bruce II and Neil Shafer (editors) (7th ed.). Krause Publications. ISBN 0-87341-207-9.
- Pick, Albert (1996). Standard Catalog of World Paper Money: General Issues to 1960. Colin R. Bruce II and Neil Shafer (editors) (8th ed.). Krause Publications. ISBN 0-87341-469-1.