Trinks & Co Kunstverlag, Trinks und Co. GmbH, Leipzig

Germany, from 1909 to at least 1951. Hermann Trinks previously ran a postcard shop in Reudnitz. Further details including addresses from deutsche FOTOTHEK, which has also got the glass negatives of the many views Trinks published.

Not sure about the card MARKE: TECO 403-2; MARKE is German but the card itself looks more Italian.

T Co 864-6
Teco 1133-2
The logo here stands for Deutscher Kunstverlag Trinks & Co, Leipzig
Marke: TECO 403-2