The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Southampton. Empire Airmail Scheme. 1937. Flying Boats Centurion and Centaurus carried mail. loaded at Southampton Eastern Docks. to Africa. India and Australia. Post Office Picture Card
Southampton. Empire Airmail Scheme. Flying Boats Centurion and Centaurus Carried Mail. A Post Office Picture Card
Southampton. Empire Airmail Scheme. Post Office Picture Card. John Norriss. 1937
Southampton. Empire Airmail Scheme. Post Office Picture Card. John Norriss. 1983
Great Britain Oldest Working Postbox. Empire Airmail Scheme. Post Office Picture Card SWPR 18
Empire Flying Boat. The Medici Society. London. Roy Nockolds. PM. Oxford. 1937
Southampton. Bargate. Hampshire. H. B. London. 1937