| Definitive issue - Portrait Leopold III - type 'Poortman nr 429. |
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Date of issue: 15th of February 1951.
OBC/COB numbers: 847-848B.F
Perforation: 11 1/2
Size:
Composition of the sheets: 50
Printing Process: Screendeepprint
Number of plates: 1-2-3-4
Printing Run:
Paper:
847 - 3F - Brown Bister - new type nr 428
847A -4F - Ultramarine - new type nr 428
848- 6F - Carmine Pink - new type nr 428
848A 10F - Gray Brown - new type nr 428
848B - 20F - Light Red - new type nr 428
Variations
848A.F - 10F - Gray Brown - new type nr 428 Phosforescent Paper
848B.F - 20F - Light Red - new type nr 428 Phosforescent Paper