Antique French Wooden Children's Architecture Game, 1920s-1930s

This type of wooden architectural game was used in schools or at home in France in the early 20th century to teach children the principles of building an architectural structure, just as we would now use Lego! The first owner's name is written in chalk on the inside.
 
The box is in used condition, the clasp is broken, but none of the pieces are missing.
 
30cm x 20cm x 6.5cm