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 UDB RP Atchison Topeka & Santa Fe Mallet 3000 No Buyers fee TR039
SWITZERLAND Postcard UDB Luzern Gütschbahn Hotel Gütsch PA55
SWITZERLAND Postcard UDB Rigi Bahn Schnurtobelbrücke posted Annecy PA54
Postcard UDB SWITZERLAND Vitznau Rigi Bahn 1899 Schnurtobelbrücke No fee PA32
Postcard UDB railway steam loco FC Oeste de la Habana #26 No Buyers fee TR035
Postcard SWITZERLAND UDB CF Rochers de Naye steam loco 6 No Buyers fee PA44
