Original Austrian KuK Imperial mail Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes in Prague. Worn, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to be stuffed into the small Rohrpost cartridges.

Original Austrian KuK Imperial mail Ganzsache Karte / postal stationery card reply card pair for use in the Rohrpost / pneumatic system of underground mail tubes in Prague. Slightly worn, good condition.

Original Austrian KuK Imperial mail Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes. Slightly worn, good condition.

Original Austrian KuK Imperial mail Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes in Prague. Slightly worn, good condition. With additional 5 Heller indicia.

Original Austrian Interwar mail Ganzsache / postal stationery cover for use in the Rohrpost / pneumatic system of underground mail tubes. Slightly worn and wrinkled, decent condition.

Original Austrian Interwar mail Ganzsache / postal stationery cover for use in the Rohrpost / pneumatic system of underground mail tubes. Slightly worn, good condition.

Original Austrian KuK Imperial mail Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes. Worn, Bedarfserhaltung / commercially used condition, as per scan.

Original Austrian Interwar mail Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes. Worn, Bedarfserhaltung / commercially used condition, as per scan.

Original Austrian KuK Imperial mail 1900-issue Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes in Prague. Worn, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to be stuffed into the small Rohrpost cartridges.

Original Austrian KuK Imperial mail Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes in Wien / Vienna. Worn, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to be stuffed into the small Rohrpost cartridges. Scarce usage -- upfranked with 5H for the new Bahnhofkorrespondenz rate, so-called 'Railway Correspondence'.

Original Austrian KuK Imperial mail Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes in Prague. Worn, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to be stuffed into the small Rohrpost cartridges.

Original Austrian KuK Imperial mail 1879-issue Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes in Wien / Vienna. Worn, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to be stuffed into the small Rohrpost cartridges.

Original Austrian KuK Imperial mail 1880-issue Ganzsache Karte / postal stationery card for use in the Rohrpost / pneumatic system of underground mail tubes in Wien / Vienna. Worn, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to be stuffed into the small Rohrpost cartridges.

Original Austrian KuK Imperial mail Ganzsache - Kartenbrief / postal stationery card-letter for use in the Rohrpost / pneumatic system of underground mail tubes in Wien / Vienna. Worn, small opening tear at lower left, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to fit in the small Rohrpost cartridges. Upfranked for new rate.

Original Austrian KuK Imperial mail Ganzsache - Kartenbrief / postal stationery card-letter for use in the Rohrpost / pneumatic system of underground mail tubes in Prague. Worn, Bedarfserhaltung / commercially used condition, as per scan; these were generally folded to fit in the small Rohrpost cartridges. Variety with the light yellow interior.