A wooden box with a lid containing cards in opaque coated cardboard, printed in hierarchical colours with the numbers 1, 10, 100, 1,000, 10,000, 100,000, 1,000,000, 10,000,000, 100,000,000 on a white background; the numbers 1, 10, 100, 1000 on various coloured backgrounds according to the hierarchies of the decimal system (green, blue, red); 2 sets of cards with the numbers 1 to 9 printed in black on a gray background and the numbers 0, 00, 000 also printed in black on a gray background.
Manufacturer: Montessori BF (Trento, Italy)