Vintage 4 Inlay Puzzle set from Sofi

Well Loved by child and adult this vtg set of inlay puzzles is copy right 1954 by Wonder Books Co. parents were wise enough to mark the backs of the pcs to make clean up sorting easier. The children left their marks to posterity upon the box. There is a hole notched in the box side. I am unsure its intentional purpose. One pizzle is missing a piece. Not a bad record for its age. Great memories for some. Pieces of history for others. Show them what “Old School” means. Hope for the Future !