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PORTUGUESE COLONIES - ANGOLA ARCHIVE SPECIMENS 1942 Ceres surcharge set complete from 10c on 45c to 60c on 1a, Michel 295/300 or SG 413/418, these in strips of three on old archive paper and cancelled with three line 'SPECIMEN / COLLECTION / MAURITANIE' handstamp in magenta. Some damage to one stamp of the 35c on 85c strip, but a unique group from the Mauritania UPU specimen archives. (18 stamps)