BOTSWANA 1976 (MNH) 20T/20C GEM DIAMONDS, PVA AND PVAD SINGLES
20t/20c Gem Diamonds x 2, type I surcharge, with different gum types: PVA (white) and PVAD (bluish) respectively. White gum variety extremely scarce. Fresh and fine. Mint never hinged. SG375/var; SC163/var
