Blue Fluted Half Lace Large, rare square bowl

Royal Copenhagen Blue Fluted Half Lace, large, rare square bowl. The factory mark shows, that this was produced between 1928 and 1935. Decoration number 1/581. Factory first but has one Dark spot in glaze on the inside. Please ser close-up picture. Measures 23.5 by 23.0 cm. Perfect condition with no chips, cracks or repairs.