Lot of 100 ancient clay marbles 1900

Lot of 100 clay marbles, old, from the beginning of the 20th century. The color has been well preserved on some marbles. On others the color has almost completely disappeared which might suggest that they are even older (19th?). Traces of wear attest to their use in a schoolyard. In good condition given their advanced age. The marbles will be sent to an old glass jar. Each ball is about 1.5 cm in diameter.