Bidspirit auction | Postal history.Pre-philately. 1845. Cover for

Postal history.Pre-philately. 1845. Cover for sending documents, exempt from postage as they were from the National Service, sent from Porto Carazeda on 3.6.1845, marked SEGURA PORTO PRT-S4, in black, not listed in the rar10 catalogue for Mogadouro. On the back, the assistant postmaster wrote “Public interest. Porto, 3 June 1845, signed by Card. Guim”. Very well-marked.