The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Submarine Mining Work in the British Navy. 6136. Photo Gale and Polden LTD. The Nelson Series. G. and P. LTD
Latest Addition to the British Navy. The Sub Marine. J. Welch
15. Zeebrugge. Belgian memorial to the crew of the British submarine. C. 3. A. Dohmen. Bruxelles
H. M. Submarine M Class. 1918. Model representing one of the thee British submarines built to carry in. gun. The Science Museum. London. No. 74
HMS Swordfish 61S. British submarine. 1935. Photo
HMS Swordfish 61S. British submarine. 1934. Photo
British Submarine H. M. S. Sturgeon. Valentines. RP