"Six-In-One" Jig-Saw Puzzle, The

A.V.N. Jones, along with Chad Valley were one of the more adventurous producers of plywood puzzles during the early-mid 20th Century.

These are examples of their willingness to try out new ideas, putting six similarly themed postcard-sized plywood puzzles in one box marketed as the SIX-IN-ONE jig-saw puzzles.

Two sets are illustrated and there is knowledge of a third one titled "The Six-In-One Railway Engine Jig-Saw Puzzle" featuring six famous British railway engines. There may be others.