The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Denbigh Castle. Interior. Photochrom Co. L 3577. 1943
Bodiam Castle. Interior. Photochrom. Sepiatone
Framlingham. Old House. The Castle. Interior. Photochrom Co. Ltd
Carnarvon Castle. Photochrom. No 3354
Carnarvon Castle. Photochrom. Sepiatone Series
Carnarvon Castle. Interior. Salmon. No 3154. 1931