A Japanese Kyoyaki Koyo studio flambe vase, Yamazaki Koyo (1890-1979), Showa period (1926-1989), circa 1950, the irregular ovoid stoneware vase with a covered in a rasberry copper red glaze, with a pronounced flowing flambe effect. Impressed two-character 'Koyo' mark to the base. 14.5 cm high, 13.5 cm diameter, Other Notes: Koyo Yamazaki was a student of famous Kyoto potter Rokubei VI. He exhibited often at the prestigious Nitten and received multiple awards in that and other competitions. His work is held in the Japanese Imperial collection, and in Bern Museum of Art, Switzerland and the Museum of modern Art, Boston. $400-600,