Pneumatic Tube Mail Cologne Germany
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Frontside 
Backside
There is no information available yet about a Pneumatic Tube Mail system in Cologne Germany, but this pre-printed postcard proofs there was one!
Postamt 1 Köln-Deutz, 7 April 1926
Pneumatic Tube, Rohrpost, Buizenpost
Pneumatic Tube Mail Cologne Germany
Published: 19-08-2018
Last updated: 05-01-2019
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