Private postal stationery

Private postal stationery are cards or envelopes with the official Swiss Post stamp printed on them, which were additionally provided with advertising or views at private instigation.
Around the turn of the century (1900) these were used very frequently for exhibition cards and are generally much rarer than similar cards with conventional postage stamps.

Stamp Day 1939 Private postal stationery Reichsbund der Philatelisten
5,00 EUR
Berlin postage stamp exhibition private postal stationery envelope special stamp October 15, 1922
5,00 EUR
Leipzig Sächsisch- Thüringische Industrie und Gewerbe Ausstellung Privatganzsache 1897 Sonderstempel
19,00 EUR
Hildesheim private postal stationery PP9F51 o June 14, 1899
29,00 EUR
Leipzig Saxon-Thuringian Industry and Trade Exhibition Private Postal Stationery 1897 
19,00 EUR
Leipzig Saxon-Thuringian Industry and Commerce Exhibition Private Postal Stationery 1897 Special Stamp April 24, 1897
19,00 EUR
Leipzig Saxon-Thuringian Industry and Commerce Exhibition Private Postal Stationery 1897 Special Stamp April 24, 1897 
19,00 EUR
Leipzig Saxon-Thuringian Industry and Commerce Exhibition Private Postal Stationery 1897 Special Stamp 2.5.1897 
19,00 EUR
Leipzig Saxon-Thuringian Industry and Trade Exhibition Private Postal Stationery 1897 
19,00 EUR
Leipzig Saxon-Thuringian Industry and Commerce Exhibition Private Postal Stationery 1897 Special Cancellation
19,00 EUR
Leipzig Saxon-Thuringian Industry and Commerce Exhibition Private Postal Stationery PP9C17 1897 
19,00 EUR
Leipzig Saxon-Thuringian Industry and Commerce Exhibition Private Postal Stationery 1897*
19,00 EUR
61 to 75 (from a total of 224)