Nigeria 2008 UPU Congress N50 (Ceremonial Costumes) proof pair from trial sheet showing lower stamp completely blank - two trial sheets of 43 were produced with 7 blanks - the trials are also in a different shade from the issued s……Details Below

Nigeria 2008 UPU Congress N50 (Ceremonial Costumes) proof pair from trial sheet showing lower stamp completely blank - two trial sheets of 43 were produced with 7 blanks - the trials are also in a different shade from the issued stamp, a matched pair accompany.,The proof sheets show no marginal inscriptions or plate numbers. (see scan for complete lower two rows) unmounted mint