Post Office Cornwall Outposts of Britain McKnight KaufferOriginal vintage advertising poster Posting Box at Lands End Outposts of Britain. Rare large format published by the General Post Office (GPO). Great design featuring a black and white photograph of a lady posting a letter in a remote post box at Land's End in Cornwall with rocks leading down to the sea and a small house visible in the distance, framed within a grey and black border with stylised text above and below inside a bright yellow margin.