Bidspirit auction | Portugal 1917/20 Ceres, envelope circulated

Portugal 1917/20 Ceres, envelope circulated from Lisbon 16/8/20 to Vila Nova de Poiares 17/8/20, with 6 c. franking, 2 c. stamp perforated 15x14, yellowed paper to pay the last-minute fee and 4 c. stamp perforated 15x14, yellowed paper to pay the 1st internal postage.