Portugal. (British Ship Letters). 1774. Pre-stamp envelope written from Lisbon dated '26th Nov 1774' addressed to London endorsed 'By the "Diana"/ Capt Cobb/ Q.D.C.' (Quam Deus Conservet), routed via Dover with hand-struck 'Dover/ Ship Lre' (Robertson S4) with London Bishopmark '16/ De' and rated '1/1' on face. Very fine item.