"ULTRAMAR": 1897/1933 (ca.), unused group of 20 postal stationery cards and envelopes with the security overprints from the Portuguese UPU postal archives for the colonies, incl. "COLONIAS", "SPECIMEN" and "ESPECIMEN", with Belgian Congo, Sudan, Marocco, Ethiopia and KUK, together with some meters and wrappers; some toning and mixed condition, a very scarce specialist group