They may be said to possess a series of bronzes, in which gold and silver replace tin and zinc, all these alloys being characterized by patina having a wonderful range of tint.
Okazaki Sessei has successfully achieved the casting of huge panels carrying designs in high relief; and whether there is question of patina or of workmanship, Jomi Eisuke has never been surpassed.
Great importance has always been attached by Japanese experts to the patina of metal used for artistic chiselling.
But after proper treatmenti the former develops a glossy black patina with violet sheen, and the latter shows beautiful shades of grey with silvery lustre.
It was mainly for the sake of their patina that value attached to the remarkable alloys shakudo (3 parts of gold to 97 of a Ba.