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Date of issue: 27th of March 1951.
OBC/COB numbers: 842-844
Created by: Marc Severin /Gravure Leon Janssens
Perforation: 111/2
Size:
Composition of the sheets: 30
Printing Process: Steeldeepprint
Number of plates: 1-2-3-4
Printing Run: 842 - 169.595ex ; 843 - 140.102ex ; 844 - 135.879ex
Paper:
842 - 80c+20c - Chemist
843 - 2F50+50c - Clas room in Kongo
844 - 4F+2F - Allegory about Peace