16th January 1921
† First, by way of explanation:
Combining the Scott  and Gibbons  narratives, Under the Pact of Corfu (1917), representatives of
Montenegro resolved to form a single nation to be ruled by the Serbian dynasty. When the Austo-Hungarian Empire broke up in October 1918, its former southern Slav provinces combined and formed a national council which asked to join the others. In December 1918 Prince Regent Alexander proclaimed the Kingdom of the Serbs, Croats and Slovenes.
From 1918 to 1920, separate issues were made for Bosnia and Herzegovina, Croatia and Slovenia [Serbia too, but both catalogues list this separately.] Gibbons numbers these sequentially, Scott does so discretely.
The first general issue for Yugoslavia was made in 1921.
Issues for Bosnia and Herzegovina
Issues for Croatia ‡
Issues for Slovenia
|Yugoslavia 1918 Sc-1L1 SG1||Yugoslavia 1918 Sc-2L1 SG53||Yugoslavia 1919 Sc-3L1 SG97|
‡ referred to as Croatia-Slavonia in Scott. Scott also lists semi-postal stamps for the Carinthia Plebiscite, Sc4LB1-4LB6.
Issues for Bosnia and Herzegovina were overprints of B&H stamps.
Issues for Croatia-Slavonia began with overprints of Hungarian stamps.
Issues for Slovenia were printed for that purpose.
perf 12, no wmk, engraved
Printed by the American Bank Note Co.
|2 paras sepia||1||1||164|
|5p - 75p values||1||2-9||165-172|
|1 dinar orange||2||10||173|
|2d - 10d values||2||11-14||174-177|
Gibbons notes that imperforate remainders of this issue were distributed during 1975.
Changes of Administration
Federal People's Republic
|1929 Sc-B17 SG243||1945 Sc202 SG525||1992 Sc2154 SG2785|
In 1929, the country's name was changed to Yugoslavia. (1929 Sc-B17 SG243, semi-postal).
After WW2 (see below for occupation issues) Martial Tito seized power. Stamps were issued in the regions (B&H, Croatia, Montenegro, Serbia and Slovenia) in addition to general issues (SG482+).
The Federal People's Republic was declared on 29th November 1945 and the Federated Republic in May 1992.
Government in Exile
|1943 Sc-1K1 SG468|
Gibbons states that Yugoslavia was invaded by German, Italian, Hungarian and Bulgarion troops in 1941. It describes the division of the country between Germany, Italy, Hungary, Albania and Bulgaria and using the stamps of those countries thereafter. The remainder oy the country was divided into three states:
Croatia, later taken over by Italy. Gibbons lists the stamps under Croatia.
Montenegro, again, taken over by Italy and listed by Gibbons under Montenegro.
Serbia, in reality remained under German rule, stamps listed under Serbia.
Gibbons lists issues of the Yugoslav govt. in exile in London, "for the use of the Yugoslav Merchant Navy working with the allies". Scott calls this an Office Abroad.