Bidspirit auction | Portugal 1912/4 Ceres. Locally circulated

Portugal 1912/4 Ceres. Locally circulated envelope in Lisbon (7.1.21) with a 10 c brick stamp, perforated 15x14, satin paper, MF215k with defective printing due to excess ink, possibly carried out during the strike of the Mint staff (July 10 to September 3, 1920) by soldiers of the RAILWAY BATTALION. Envelope with defects.