The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Edinburgh Castle and National Gallery of Scotland. Valentine and Sons Ltd. Art Colour. Brian Gerald
Edinburgh Castle and National Gallery. Robertson. 202057 J. V. Valentine and Sons LTD. Dundee and London. Valentine Carbo Colour Postcards
Good Luck from Edinburgh. Castle and National Gallery. Princes Stress Looking West. Valentine and Sons Ltd. Phototype. Multi View. 1952
Edinburgh Castle and National Gallery. Valentines XL Series. RP. 1907
Edinburgh Castle and National Gallery of Scotland. Alex G. Anderson
Edinburgh Castle National Gallery and Scott Monument. Valentine. Valesqu
National Gallery and Castle. Edinburgh. 1905
Edinburgh Castle and National Gallery of Scotland. Valentine. Art Colour. No A.62