Franking
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Franking comprises all devices, markings, or combinations thereof applied to mails of any class which qualifies them to be postally serviced. Types of franks include postage stamps, impressions applie
An 1832 stampless single-sheet "Liverpool Ship Letter" pen franked "Paid 5" by a U.S. postal clerk in Philadelphia, PA
Modern postal clerk script franking with circular date stamp (Ukraine)
1840 (UK)
Postally franked German Air Mail cover (Berlin-Buenos Aires via D-LZ127 Graf Zeppelin (1934))
Postage meter
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A postage meter or franking machine is a mechanical device used to create and apply physical evidence of postage to mailed items. Postage meters are regulated by a country's postal authority. A postag
Franking
…stamps, postage franking can be in the form of printed or stamped impressions made in an authorized format and applied directly by a franking machine, postage meter, computer generated franking labels or other similar methods ("Postage Evidencing Systems"), any form of preprinted "Postage Paid" notice authorized…
The Pitney Bowes Model M postage meter 1920
An early machine pictured on a 1932 envelope from Brazil addressed to Pitney Bowes
Modern Pitney Bowes franking machine