The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Windsor Castle. The Round Tower. Windsor Series. British Manufacture
Round Tower. Windsor Castle. 54. Excel Series. RP
Windsor Castle. Round Tower etc. Friths Series. No. 35381
Windsor Castle. Round Tower. Real Photo Series
Round Tower. Windsor Castle. 1403. Natural Colour Series. Photographic Greeting Card
Windsor Castle. The Round Tower. Photo Precision. English Series. RP
Windsor Castle. Round Tower and Moat Garden. Friths Series. No. 66992