Trio of vintage artisanal pyrite stoneware beer or cider mugs

Nice trio of beer or cider mugs, cups or mugs, in artisanal pyrite stoneware, vintage. Unsigned. Nice shapes slightly tightened in the center, base decorated with 2 rings, pretty thin handles. Gray/khaki and chestnut brown enamel with pyrite spots. Different enamel on each. 11cm high, 12.5cm wide with handle, 9cm in diameter. Very good condition, very good quality. About 350gr each.