Pneumatic Post: Letter distribution through pressurized air tubes. Pneumatic posts existed in many large cities in Europe, and special stamps and stationery were often produced for the service.
Pneumatic post: Letter distribution through air tubes. Postage dues: Stamps or markings used by authorities to convey that insufficient postage has been used. Postal fiscal: Revenue Stamps ...
D: 1: Pneumatic Post, (Italy) Scott catalogue prefixes to identify stamps other than standard postage. 2: (With no country name, with value and Queen's cameo) Great Britain pence, monetary unit.
A complete pneumatic post stamp collection, including minor number varieties, would comprise 23 stamps with a catalog value in unused condition of less than $70. The stamps are more expensive in used condition.
Pneumatic post stamps - for mail sent using pressurized air tubes, only produced in Italy Postage due - a stamp showing that the full postage has not been paid, and indicating the amount to pay.
See also: Local, Frank, Postal stationery, Postage Due, Used
 
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