The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
The Round Tower. Windsor Castle. G. 4827. Valentines. RP. 1941
The Round Tower. Windsor Castle. Valentines. RP. 1958
Round Tower. Windsor Castle. Valentines. No. 1397. Art Colour. E.W.H
The Round Tower. Windsor Castle. Valentine. RP
Windsor Castle. Round Tower. Valentine and Sons. Ltd. RP
Windsor Castle. The Round Tower. Valentine. Art Colour. E. W. H