Osaka chawan, Japan, Osaka, 1st half of 20th c., red earthenware and gray glaze with numerous iron inclusions, cobalt blue and iron red underglaze painting of flower tendril repeat, rustic-simple, very light chawan of the tea way(chado), signed, in original wooden box ''tetsu-e nyokabun-chawan''(i.e.tea bowl with field flower pattern in iron painting) potter's signature and seal, 11,5x6,5cm