JOINT ISSUE

A joint issue is the release of stamps or postal stationery by two or more countries to commemorate the same topic, event or person of relevance to both countries. Joint issues typically have the same first day of issue and their design is often similar or identical, except for the identification of country and value.
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Une émission conjointe est une émission de timbres-poste à l'illustration ou au thème identique, effectuée la même année par au moins deux pays volontaires et qui se sont concertés.
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(n.) = edición conjunta
Ex: In UNIMARC the joint issue field is used to link the item being catalogued to another bibliographic item that is issued with it, such as an item bound with another item.

Ex: In UNIMARC the joint issue field is used to link the item being catalogued to another bibliographic item that is issued with it, such as an item bound with another item.

Two or more countries issuing and releasing a stamp or set of stamps with a similar design on the same day.