Banco de Angola, specimen 500 escudos, 1000 escudos, 1970, prefix, 11Ab, 23aA, 500 escudos, red, Porto de Luanda at centre, Américo Tomás at left, reverse, two rhino, 1000 escudos, blue, dam at centre, Américo Tomás at right, reverse, antelopes, (Pick 97s, 98s, TBB B421bs2, B422bs2), both with De La Rue specimen stamps, SPECIMEN overprints, both with minor mounting traces at reverse, about uncirculated (2)