The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Alnwick Castle and Lion Bridge. Valentines Series. 1907
The Barbican. Alnwick Castle. Valentine. Sepiatype. 1951
Music Room. Alnwick Castle. Valentines Series. 1917
Bowes Museum. Barnard Castle. Valentine. 1907
Old Postcard. Castle. Alnwick. Multi view. Valentine. 1910
Edinburgh from the Castle. Valentine. 1903
Inverness from the Castle. Valentine. 1905
Warwick Castle. Valentine