4 stoneware cups with Celtic patterns

4 enameled stoneware cups decorated with a band-shaped motif reminiscent of the Breton cross. The 4 cups are different colors but matched around the blue-gray. Very good condition, no signs of wear from time. Each cup weighs approximately 300 grams, with a slightly flared shape: 5 cm at the base and 8 cm at the opening for a height of approximately 9 cm. No indication of provenance but they are signed (unidentified signature).