Hallo,
You may want to view my deCoppet rasierklingenstempel exhibit for more information about these special cancels:
The Vevey page is here:
and this is my favorite Lausanne Consig. Mess. cancel:
As regards the values. My list, prepared by Herr Steinbrüchel, has a note on the side margin stating:
Briefstücke gelten ca. 1/2
Einzelmarken gelten ca 1/4
It is my understanding the values shown in the above post would be for cancels on covers and cards.
Happy New Year
Roger