A CIRCULAR IRON TSUBA with a stylised thundercloud pattern in silver sujizogan, the face decorated with four large flower roundels in coloured enamels with gilt cloisons, (shippo), depicting wisteria, bush clover, peony and chrysanthemum, two more roundels on the reverse, the iron plate 18th century, the shippo 19th century, Hirata school, possibly by Harunari