Small two-sided vase, in vintage handcrafted enameled stoneware, signature to identify

Beautiful vase, original, modernist and brutalist, in enameled stoneware, vintage craftsmanship, signature to be identified under the base. Round shape with wide neck and flared foot. One side red earth, one gray side, shades of yellow and brown, decorated with abstract geometric white patterns in relief. 12.5cm high, approximately 11cm in diameter at the widest. Very good general condition, a jump of white enamel on one of the patterns on the gray side, quite discreet. Approximately 600gr.