Catalog: Drummond OSD11

Date issued: Unknown, EKU July 3, 1956

Printing: Black on glassine

Perforation: Imperforate

Inscription: "UREDNE OTEVRENO / post. uloznou v Praze / k vypatrani odesilatele" ("OFFICIALLY OPENED / by the dead letter office in Prague / to find out the sender")

Control Number: none

Description: 1956 short paid cover from Syitavy, Czechoslovakia to Schenectady, NY reclosed at right side with Prague Dead Letter Office seal. Violet boxed "Neni uveden odesilatel" ("Senderīs address missing") on front. Envelope was opened at the DLO to find sender's address, returned, and remailed after the return address was added and postage due paid. During this period, it was forbidden in Czechoslovakia to mail letters abroad without placing return address on envelope.

Catalog: Drummond OSC4.4

Date issued: Unknown, EKU March 17, 1958

Printing: Green on white paper

Perforation: Imperforate

Inscription: "POSTOVNI URAD / PRAHA 32" ("Post Office" / Prague 32")

Control Number: none

Description: 1959 registered airmail cover from Prague, Czechoslovakia to Belleville, Ontario Canada with Prague cutsoms/currency control seal, tied by Prague datestamp. After the end of World War II until the end of the 1960's, or so, only members of the Czechoslovak Philatelist Union were allowed to exchange modest amounts of stamps with other foreign collectors. To control this, shipments in both directions were required to pass through a special stamp exchange office, "Stredisko vymeny znamek" ("Stamp exchange central") in return address.

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by T. Hirn

Updated October 28, 2007