Cover from the 2006 BS set celebrating the 150th anniversary of the National Portrait Gallery with the background featuring the Union Flag and the Royal Arms as mounted above the Gallery's main entrance. This particular cover features Sir Winston Churchill and bears the single commemorative with a pictorial Walmer, Deal handstamp for the official residence of the Lord Warden of the Cinque Ports which office he held between 1941 and 1965 and the cover has been doubled with a single commemorative from the 2024 issue commemorating the 150th anniversary of his birth with a Blenheim Palace handstamp.
