I have posted max. allowance of photos, if you want to see any eras not covered I can send further photos.

Standing Helvetia of 1907 , only the 25c 11and half x 11 is available.

The  1948 IMABA Basel mini sheet both mnh and fu are in the collection as well as the LUNABA Lucerne 1951.

There are also some Pro Patria sets and a good selection of League of Nations.