Nigeria 2008 UPU Congress N50 (Ceremonial Costumes) proof plate block of 6 from trial sheet being in a different shade from the issued stamp, complete with a matched issued block.,Two trial proof sheets of 43 stamps & 7 blank labe……Details Below

Nigeria 2008 UPU Congress N50 (Ceremonial Costumes) proof plate block of 6 from trial sheet being in a different shade from the issued stamp, complete with a matched issued block.,Two trial proof sheets of 43 stamps & 7 blank labels only were produced showing no marginal inscriptions or plate numbers (see scan for complete lower two rows) unmounted mint