Untitled - Canadian Pacific Poster

A wooden puzzle acquired unboxed from the collection of John Hyde.

It is clearly derived from the Canadian Pacific poster created by artist Bernard Gribble and the vessel depicted is one of the "Empress" class, possibly the Empress of Scotland.

The cut and texture strongly suggests the puzzle was made by Chad Valley in the early 1950's.

More specific confirmation and an example of box are welcomed.

Artist: Gribble, Bernard Finnegan (1872 - 1962)
Date: c.1950's
Brand: Unknown
Material: 3-ply wood
Nationality: Considered to be British
Pieces: c.500
Size: 21¼" x24½ "
Theme: Promotional
Title: Untitled - Canadian Pacific Poster