1970, 24 October. Inauguration of the new W.P.U building in Bern, 1970. No’s 720-721

Design:

Printing:

Paper with silk threads

Perforation: 11.5

Sheet: 50

Circulation:

 

No.720 2K, orange

No.721 6,60K, blue

The series:

 

The imperforated series is in size and coloring exact the same as above:

 

There are no variations or curiosities known for none of the above shown material.