This section describes some unusual covers, handled by the Pneumatic Post system on part of their journeys. See also some of the "Air Mail" items!
| Minipic | Details |
|---|
 | 1882: postcard to the Hotel Royal, Singerstrasse |
 | 1894: Improper but unchallenged use of Hungarian-franked non-pneumatic stationery card |
 | 1900 & 1901: Found In The Letter-box |
 | 1930: A philatelic Zeppelin flight cover |
 | 1938: A difference in handling on Plebiscite Day |
 | 1964: TELEGRAPHENZENTRALSTATION WIEN cancel but not pneumatically transported |