3 boxes with 10 Veiligglas marbles (from my own collection)
Landy detergent advertising from the 1950's
This detergent product was new, acording to a newspaper article, in 1952
The box says "stuiters" , that will be 1 inch but the marbles are 16+ - 17+ mm.
Every box has 3 white, 3 brown, 3 blue and one opaque marble
One box has 1 a Cat Eye (maby not original)