Omnibus issue

An omnibus issue are commemoratives for a common event, usually issued by and for a country's colonies or by a group of associated countries. They may or may not have the same designs depending one one's definition. In recent years, omnibus issues have gone more toward a common theme rather than using the same designs, as the Europa issues have done. Collectors should aware that unrelated countries have also released issues on the same topic, countries that have no connection to the event being commemorated. These can be collected, but are related topical issues and not directly part of the omnibus issue.

Note the difference from keytypes, which refer to definitive issues with common designs.

 File:Cape Verde Imperial.jpg|1938 1.75 escudo value from the empire issue for the Portuguese colonies, here for Cape Verde. File:Pitcairn Silver Wedding.jpg|1948 George VI Silver Wedding issue, this for the Pitcairn Islands. File:French West Africa UPU.jpg|1949 UPU issue for the French colonies, here for French West Africa. File:Tonga 50th anniv.jpg|2003 issue for the 5oth anniversary of Elizabeth II's coronation. Here, the Tonga issue, with quite different designs in the series. 

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