If its about a detail of a particular card I will answer as soon as I can but that might not be straight away. This should also provide you with the Publishers details. I do not send "anonymous" letters.
POSTCARD SWITZERLAND steam loco C5/6 2978 at Olten 1977 Publisher Minirex TR020
Postcard SWITZERLAND Rigi Bahn steam loco 10 Schnurtobelbrücke No fee PA37
UDB Postcard SWITZERLAND CF Rochers de Naye steam loco 6 No Buyers fee PA44
Postcard SWITZERLAND UDB Gotthard Tunnel Expresszug No Buyers fee PA38
POSTCARD SWITZERLAND Schnurtobelbrücke Vitznau-Rigi-Bahn Official card Nr5 PA16
Postcard SWITZERLAND funicular Pilatusbahn 1907 No Buyers fee PA31
