ZAMBIA 1973 (MNH) 4N WHO ANNIVERSARY PLATE 1A BLOCK
4n WHO Anniversary plate 1A–1A–1A–1A–1A–1A block x 4. Very scarce positional piece. Fresh and fine. Mint never hinged. SG199; SC108
Note: only a limited number of the 4n WHO Anniversary were printed and most were issued to post offices for local use
