If its about a detail of a particular card I will answer as soon as I can but that might not be straight away.
Postcard SWITZERLAND UDB CF Rochers de Naye steam loco 6 No Buyers fee PA44
Postcard SWITZERLAND UDB Gotthard Tunnel Expresszug No Buyers fee PA38
POSTCARD SWITZERLAND UDB Chemin de fer la Naye Steam loco JJ 1443 PA15
Postcard UDB railway steam loco FC Oeste de la Habana #26 No Buyers fee TR035
POSTCARD SWITZERLAND steam loco C5/6 2978 at Olten 1977 Publisher Minirex TR020
Postcard SWITZERLAND Rigi Bahn steam loco 10 Schnurtobelbrücke No fee PA37
