|Title||Czechoslovakia. Celebration the International Labor Organization, overprint “B.I.T.1937” on definitive stamps.
Registered Letter sent from Prague.
|Description||The three contemporary Czechoslovakia definitive stamps shown above (Sc. 236-238) were overprinted “B.I.T.1937” on October 6, 1937 to celebrate the International Labor Organization.
The International Labor Organization held its conference in Geneva, Switzerland, in June 1937.
Stamp Sc. 236 – President Benes
Stamp Sc. 237 – Town Banska Bystrica
Stamp Sc. 238 – Castle at Zvikov
|Used/Unused||Special Cancellation – International Labor Organization, Praha, 9.10.1937.|
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