Portugal. (Great Britain). 1843. Stamp-less envelope written from London dated '21st Jan 1843' addressed to Porto cancelled by London tombstone and Foreign Branch Office on reverse, rated '1/6', endorsed 'via Falmouth' with boxed Porto arrival '29th Jan' and charged with hand-struck '490' in blue/green on face. Lovely item paying the 3 1/2 times rate for mail from Great Britain.