The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Peterborough Cathedral. N. W. Photochrom. Postcard. 1911
Peterborough Cathedral. Postcard
30137. Peterborough Cathedral S. E. Photochrom
Peterborough Cathedral. N. W. Photochrom Co. Ltd. Sepiatone Series
Peterborough Cathedral. Post Card. 1905