5 ceramic hen egg cups

This charming series of ceramic hen egg cups was made and painted by hand. They are therefore all different: 3 elongated measuring 9 cm and 2 others on legs or base (head turned), a little less than 7 cm long. A naive style of foreign origin it seems to me, not having seen similar ones. Vintage pieces in good overall condition, no cracks, just a small enamel scratch on one of the edges.