Organization of Socialist Countries' Postal Administration Conference - Part of a set of 3 stamps

Issue date: 19th June 1961

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40 f

Red-orange and black

Steam locomotive on the left

 

Watermark 12: 

Circulation: 350,000

Perforation: 13½

Catalog No.:   M 1762 - S 1389 - SG 1740 - YT ???