The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Cornflower. J. Arthur Dixon. Postcard
Cornflower. J. Arthur Dixon
Cornflower. J. Arthur Dixon. 1967
Cornflower. Centaurea Cyanus. J. Arthur Dixon Ltd. 1961
Cornflower. Centaurea cyanus. J. Arthur Dixon. Natural Colour Photogravure. P. C. 1146