The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Sandringham House and Gardens. Postcard
The Lake and Sandringham House. Postcard
Sandringham House and Gardens. H. Coates. Nene. No 6050. RP
Sandringham House and Gardens. H. Coates. RP
Sandringham House and Gardens. H. Coates. Nene Series. RP
Sandringham House and Gardens. H. Coates. RP. 1928