ZAMBIA 1973 (MNH) 4N WHO ANNIVERSARY PLATE 1D BLOCK
4n WHO Anniversary plate 1D–1D–1D–1D–1D–1D block x 4. Extremely 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
