Evening Flight of Mallards

Large, 750 piece plywood jigsaw puzzle from this excellent wildlife painting, which is signed Edward Ward *, which I would guess dates from the 1950's.
* I believe this painting may actually by the artist Vernon Ward, who is known to have painted under various alternative names. Signature and style are very reminiscent of his works. See Puffins by Ponda, as an example of my reasoning.

Artist: Ward, Edward
Brand: Penelope
Material: Plywood
Nationality: Switzerland
Pieces: 750
Size: 20" x 15 1/2"
Theme: Birds
Title: Evening Flight of Mallards