The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Windsor Castle. Round Tower and Norman Gate. Ernest Marshall Series
Windsor Castle. Norman Gate and Round Tower. Berkshire. Dixon
Windsor Castle. The Round Tower and Norman Gateway. Valentine. Valuxe
Norman Gateway and Round Tower. Windsor Castle. L. 1054. Collo Colour. Valentines
Windsor Castle. Norman Gate and the Round Tower. Berkshire. Dixon
Windsor Castle. Norman Gate and the Round Tower. J. Arthur Dixon