The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
G. 2721. Newark Castle. Newark on Trent. Valentines. RP
Newark Castle Valentines Series 1904
Trent Bridge and Newark Castle. Valentines Series
Newark Castle. Valentines Series
Newark Castle. Valentine. No 22463. 1917
Newark Castle. Valentine. No 22459. 1918
Newark Castle. Valentine. No 22459. 1922
Newark Castle. Valentine. Moonlight. 1905