Blue Traditional Rare oblong bowl with wavy edge from 1853-1895

Bing & Grøndahl Blue Traditional (Blue Fluted Plain), rare oblong bowl with wavy edge. The factory mark tells, that this was produced between 1853 and 1895. Factory first. Length 26.0 cm. There are some born with brown glaze faults on the edge, please see picture, otherwise perfect condition with no chips, cracks or repairs.