The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Brougham Castle. Valentine Series. Postcard
Edinburgh Castle. Valentines Series. Postcard
Dunluce Castle. Valentines Series. Postcard
Durham Castle. Valentines Series
Windsor Castle. Valentines Series. Post Card. 1905
Caesar Tower. Warwick Castle. Valentines Series. Post Card
Durham. Durham Castle. Valentine Series. Multi View. 1911