Several additional markings and handstamps were used, some authorized by the postal authorities, and some not. The Destination Marking at the top left has already been referred to in the section on Office Numbering; and "Aus dem Briefkasten" in The service develops. Here are some more! The police were a useful resource for the Rohrpost administration when address problems arose, and many of these examples have "Ask The Police" written on them. For details of a marking "click the pic"!
| Minipic | Details |
 | Depeschen-Aufgabsamt-Cancels |
 | Miscellaneous: Registered pneumatic card that never touched the pneumatic system |
 | Miscellaneous: W100 at W127 |
 | Miscellaneous: red Rohrpost labels |
 | Miscellaneous: "Found In The Box" |
 | Label: 1890 Missing house number: sent back for the complete address. |
 | Label: 1892 Address unknown: try the police |
 | Label: 1893 Undeliverable Mail: A much-travelled message, with two redirection slips |
 | Label: 1895 Addressee had moved – use of Bestell-Notizzettel |
 | Label: 1907 Addressee gone away – use of Vormerkzettel |
 | Label: 1911 Addressee had moved – use of Vormerkzettel |