The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Animals
The Royal Collection. Boy With a Dog. Giovanni Battista Piazzetta. The Roundwood Press
The Royal Collection. Windsor Castle. The King Champion. Beric Tempest
Sir Anthony Van Dyck. Topical Press. The Royal Collection
Thomas Gainsborough. Henry Duke of Cumberland with his Duchess and her sister Lady Elizabeth Luttrell. George IV. Buckingham Palace. The Royal Collection
The Negro Page. Aelbert Cuyp. H. M. Queen Elizabeth II. The Royal Collection
Van Dyck. Three heads of Charles I. B. Matthews. The Royal Collection
Johannes Vermeer. A Lady at the Virginals. Lund Humphries. The Royal Collection
Elizabeth I. As a Princess. Unknown. Lund Humphries. The Royal Collection