A very popular collecting area for stamp collectors is souvenir cancels, which commemorate an event. For many events, the postal authorities create a special cancel just for that event. Collectors will have a cover cancelled for their own collection or to send to other collectors. The following is an example of a souvenir cancel from Der ewige Jude.

This souvenir cancel, from when the exhibition was in Berlin, is dated November 13, 1938. In this case the collector had the stamp cancelled and placed the cover in his collection, rather than sending it through the mail.