Questionning with this advert postcard from the Tourism Office of Switzerland:
with markings and labels of La Poste (it is one of my last mail following me after my one year old move to the South). On the upper right corner, print on the card, a stamp-like picture of the Matterhorn and a cancellation:
The commercial continues with this illustration to look like real mail: a touristic stamp on a postcard? Switz postmark for high number of mail sending? It is plausible for the mark, less for the picture surrounded with teeth.
Communication... for a beautiful country though.