Switzerland 1938 - Pro Aero - Michel 325, Unificato A26
Switzerland 1938 - Pro Aero - Michel 325, Unificato A26
Switzerland 1864 - Sitting Helvetia 1 Fr in sheet of 50 - Zumstein 36c
Switzerland 1867 - Sitting Helvetia 50 cent in sheet of 50 - Zumstein 43
Switzerland 1843 - 5 + 5C black-greenish yellow, so-called Doppelgenf, photo certificate Hermann - Zumstein 3