The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Five Children of Charles I. 1637. Vandyck. National Portrait Gallery. 267. Ditchling Press
National Portrait Gallery. Children of Charles. After Vandyck. The Trustees of the Gallery. Ser. III
Postcard. Children of Charles I. After Vandyck
Children of Charles I. After Sir Anthony van Dyck. National Portrait Gallery
The Children of Charles. After Van Dyck. Dresden. Misch and Stock. Academy series No. 105
Inigo Jones. 1573 1652. William Hogarth after Vandyck. National Maritime Museum. Greenwich. No. 152. Westerham Press. Postcard
National Portrait Gallery. London. Children of Charles I. after Van Dyck. Wrench Series. No. 81
National Portrait Gallery. Five Children of Charles. Vandyck. Ditchling Press