202. Travel Through the Ages

From one of Waddington's earliest series of New Circular Jig-Saw puzzles this c1939, 500 piece interlocking cardboard puzzle features a montage of six transport scenes, all set around a central sky area with airliner and patent applied for No.830942 stamp.
Many thanks to Alan Sudbury for images and details and to Barbara for her invaluable help in dating all these fabulous puzzles.

Artist: Unsigned
Date: c1939
Brand: Waddington's
Material: Cardboard
Nationality: British-England
Number: 202
Pieces: 500
Range: Circular
Size: 20" diameter
Theme: Railways
Title: 202. Travel Through the Ages