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Starting January 1, 2022, this Joint Stamp Issues web site has been transferred to a new site to be found under the address
This site will remain accessible until at least end of 2022, but not updated anymore. It will be erased when all the archived information will have been completely transfered to the new site.

Joint Stamp Issues - Definitions

Definitions - Abbreviations - Literature references


For the most recent discussion about definitions, see also the proposal for the New classification system

Joint issues (emissions conjointes - Gemeinschaftsausgaben / Freundschaftsausgaben) are stamps released by two or more countries on the occasion of a common event or anniversary and that are characterized either by a common design or the same date of issue. Cases where the issue date is the same but the design different, are refered to as parallel joint issues (emission parallèle). On the contrary, when the design is identical, but the lag in issuing the stamps is greater than 3 days the issue is termed a concerted joint issue (emission concertée). In case of doubt, the proof that both postal administrations intended to work together must be provided (e.g. same design but difference in date of issue too large, or, almost same date, same event, but different design and no mention on the stamps about the cooperation)

Twin issues (emissions jumelees - Zwillingsausgaben) are special cases of joint issues where design and issue date are identical for all the countries involved. 

When a large number of stamps are issued by a large number of countries (omnibus twin or joint series), those are taken in account only if these stamps are provided by different stamp printers (e.g. Europa CEPT or Norden twin issues are taken in account, but not Commonwealth small countries or islands omnibus series)

Se-tenant joint issues (emissions conjointes se-tenant - Se-tenant Gemeinschaftsausgaben) replacing the previously named Siamese issues are a special case of twin issues where the stamps of the two issuing countries are printed se-tenant. In extreme cases we have unique issues (emissions uniques - Einzelausgaben) for which only a single stamp bearing the names of all the countries involved is printed, a case which is very seldom.

When issuing countries are only dependencies or colonies of the main issuing country, issues cannot be considered as true joint issues and are therefore identified as territorial or colonial joint or twin issues (emissions conjointes territoriales ou coloniales - lokale oder koloniale Gemeinschaftsausgaben). Territorial or colonial joint issues can of course be parallel or concerted issues.

When the event is common, but design and issuing date are different, the issue is termed a common issues (emissions communes - gemeinsame Ausgaben). These stamps are usually not reported because they are out of the scope of the studies and the catalogue (absence of cooperation between postal administrations).

Sometimes stamps from one country appear to announce a joint issue from another country but in reality this second stamp is never released. This would be a unilateral issues (emissions unilaterales - einseitige Ausgabe). Normally these stamps are not listed here, except in some rare cases when a stamp was under preparation but was never issued for political or technical reasons (aborted joint issue - emission conjointe avortee - gescheiterte Gemeinschaftsausgabe).



BF (Bloc-feuillet - French) or Bl (Block - German): Souvenir sheet or miniature sheet. 
DBZ: Deutsche Briefmarken Zeitung - German philatelic newspaper - more details under
ETB: (Ersttagblatt - German), document with a first day cancellation and issued by the German post office.
FDC: (First day cover), document with a first day cancellation, not necessarily the one with the special illustration.
MiR: Michel Rundschau - German philatelic newspaper - more details under or


Literature references 

or "Where to find the information" - see also Web links

Greiner Johannes, Greiner Horst, Aerogramme von Europa, 3. Auflage, 1993, Arbeitsgemeinschaft "Aerogramme" im Europäischen Aero-Philatelisten-Club e.V. Stuttgart

Michel, Briefmarken Katalog, Schwaneberger Verlag GmbH, München (Deutschland) (German)
- Europa-Katalog West und Mitteleuropa 2002/2003 - EK1 (West and Middle Europe catalogue)
- Südeuropa 2002/2003 - EK2 (South Europe catalogue)
- Nord und Nordwesteuropa 2001/2002 - EK3 (North and North west Europa catalogue)
- Ost Europa 2001/2002 - EK4 (East Europe catalogue)
- Nord und Mittel Amerika 2000- Band 1 (North and Central America catalogue)
- Karibische Inseln 2000 - Band 2 (Caribbean countries catalogue)
- Südamerika 2001 - Band 3 (South America catalogue)
- Nord- und Ostafrika 2002- Band 4 (North and East African countries catalogue)
- Westafrika 2001/2002 - Band 5 (West Africa catalogue)
- Süd und Zentralafrika 2002 - Band 6 (South and Central Africa countries catalogue)
- Australien 1997 - Band 7 (Australian and Oceanic countries catalogue)
- Süd- und Südostasien 1998 - Band 8 (South and South-east Asian countries catalogue)
- Mittel und Ostasien 1999 - Band 9 (Middle and East Asian countries catalogue)
- Naher Osten 1999 - Band 10 (Near East countries catalogue)
- Europa Ost 1998/99 (East countries catalogue)
- Deutschland 2002/2003 (Germany specialised catalogue)
- CEPT - UNO 2002 (Europe and UN catalogue)
- Ganzsachen Europa West 2000/2001 (postal stationary West Europe)
- Ganzsachen Europa Ost 2001/2002 (postal stationary East Europe)

Michel Rundschau, Schwaneberger Verlag GmbH, Ohmstrasse 1, D-85716 Unterschleißheim (Germany); monthly edition (German) -   Müller Klaus, Wiegand Werner, Katalog der Aerogramme von Afrika 1995, Arbeitsgemeinschaft "Aerogramme" im Europäischen Aero-Philatelisten-Club e.V. Stuttgart (German)   Roggenkämper H.A., Russ Peter, Wiegand Werner, Katalog der Aerogramme von Australien und Ozeanien, 1992, Arbeitsgemeinschaft "Aerogramme" im Europäischen Aero-Philatelisten-Club e.V. Stuttgart (German)   Theodore Champion, Bulletin mensuel, T. Champion SA, 8 rue des Messageries, F-75010 Paris; monthly edition (French).   Wiegand Werner, Katalog der Aerogramme von Asien, 2000, Arbeitsgemeinschaft "Aerogramme" im Europäischen Aero-Philatelisten-Club e.V. Stuttgart (German)

Yvert et Tellier, Catalogue de timbres-poste, Editions Yvert & Tellier, Amiens (France) (French)
- Tome 1, 2002, Timbres de France (French stamps)
- Tome 1bis, 2002, Timbres de Monaco
- Tome 2, Timbres des pays d'expression française, 1997-1999 (French speaking countries) (2 volumes: French colonies and French speaking countries)
- Tome 3, 2001, Timbres d'Europe de l'Ouest (2 tomes A-G et H-Z) (West Europe)
- Tome 4, 1996, Timbres de l'Europe de l'Est (East Europe)
- Tome 5, 1998, Timbres d'Outremer, (3 tomes: Aden - Bresil, Brunei - Cyrenaique, Dominicaine-Guatemala) (Rest of the world)
- Tome 6, 2000, Timbres d'Outremer, F-N; (2 volumes: Guinee Bissau - Lesotho, Liban - Nyassaland)
- Tome 7, 1998, Timbres d'Outremer, (2 tomes: Ocean Indien - Samoa, Seychelles - Zoulouland) 

R. Schmalenberg has already reported several times on joint issues in the Deutsche Briefmarken Zeitung (14/92, 3-4/96, 1-2/97; DBZ, Postfach 1363, D-56373 Nassau) and plans to inform regularly in the future on new issues in this stamp newspaper. Regular publications on this topic written by W. Kluge have appeared also in the Michel Rundschau (10/1995, 2/1996, 3/1997, 5/1998, 5/1999, 5/2000, 5/2001, 5/2002, 6/2003).

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