Stamp Day.
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Date of issue: 25th of April 1971.
OBC/COB number: 1577
Created by: Jean Malvaux / Jalmes Thirlar / Leon Janssens
Perforation: 11 1/2
Size: 24mm x35mm
Composition of the sheets: 30
Printing Process: Combined Steel and Screendeepprint
Number of plates: 1-2-3-4
Printing Run: 10.500.000ex
Paper: P3 ( see paper Types )1577 - 3F50 - Postman 1855