The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
National Maritime Museum. The Octagon Room in Flamsteed House. Topical Press. Pitkin Pictorial Postcard
National Maritime Museum. Greenwich. c. 1675. Old Royal Observatory. Flamsteed House. The Octagon Room. Crown. Card 90
Greenwich. National Maritime Museum. the Royal Observatory and Sir Christopher Wren Old Royal Naval College. Daraotsu. London A Z postcard
Greenwich. National Maritime Museum. The Royal Hospital at Greenwich. Canaletto. The Campfield Press
National Maritime Museum. The Royal Sovereign of 1701. William Van de Velde the Younger. Staples Printers. Crown
National Maritime Museum. The Old Royal Observatory. W. S. Cowell
Greenwich. National Maritime Museum. The Resolution. 1667. Saffron Press. Card No. 163. Van de Velde the Younger
