Christe’s NY Dr. Walter Compton Sale, Lot 104 12/17/92. Edo (1800), Sendai Sadamasa school signed, “Sadamasa Kao”. Round brass dished to the sepa-dai, carved with shakudo, gold, silver and copper high relief inlay. Student of Kusakari Sendai Sadamasa and considered his equal. A willow tree is carved on the reverse. H 6.7 x 6.4cm x 5.5mm.