Zaire 1979 River Expedition 10k (Diamond, Cotton Ball & Tobacco Leaf) superb imperf proof block of 4 superimposed with 25k value (Inzia Falls) inverted in blue & black only (as SG 955 & 958) unmounted mint
Zaire 1979 River Expedition 10k (Diamond, Cotton Ball & Tobacco Leaf) superb imperf proof block of 4 superimposed with 25k value (Inzia Falls) inverted in blue & black only (as SG 955 & 958) unmounted mint