A rare Korean celadon bowl with incised wave decoration, Goryeo Kingdom (918-1392), circa 12th century, of wide and shallow form covered completely with a beautiful blue-green celadon glaze, with incised decoration to the interior of waves, three 'Sesame' stilt marks to the base within the glazed footrim. Together with an old Japanese wooden box and purple silk shifuku. 5.5 cm high, 16.5 cm diameter