Zanzibar 1895-96 2a6p yellow-green horizontal pair, both with small second 'z', the right stamp with the prominent constant printing variety 'thick b from a different fount', SG8Dvar.
A fine unmounted mint pair with full original gum. Minor imperfections, which do not detract from overall fine appearance.
Known only from Hall's setting 'D' R6/7 and at least as rare as the 'Zanzidar' error and, therefore, considerably undervalued!