I still don't know what these stamps are, but now I know they are worth $60 on eBay. I love to see collections in which the collector has spiced the collection up with interesting pages like this one;
It appears there may be more information in an article by Günter Rost (Lokale Porto-Provisorien in Polen ab 1919) in the bulletin 37/1998 of the BUNDESARBEITSGEMEINSCHAFT POLEN e.V.
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Posted 07/26/2022 12:36 pm
Newly listed items on eBay by KRelyea. 
KENR2 SWITZERLAND SEMI POSTAL 19131925 COLLECTION FROM SCOTT SPECIALIZED ALBUM
KENR2 SWITZERLAND 19281945 COLLECTION FROM SCOTT SPECIALIZED ALBUM
KENR2 SWITZERLAND 19031924 COLLECTION FROM SCOTT SPECIALIZED ALBUM
KENR2 SWEDEN SEMI POSTAL COLLECTION FROM SCOTT SPECIALIZED ALBUM
KENR2 SWEDEN 19211944 COLLECTION FROM SCOTT SPECIALIZED ALBUM
