Banco de Angola, specimen 20 angolares, 1 March 1951, serial number 51ZD 00000 lilac on multicolour underprint, man standing at left, fort at right centre, Correia at right, signatures of Anibal de Mesquita Guimares and Francisco Luis da Silva Duerte and Artur de Melo Quintela Saldanha, reverse battle scene, the reconquest of Loanda in 1648 (Pick 83, TBB B409b), in PMG holder 65 EPQ Gem Uncirculated, black SPECIMEN overprint