A hefty section of tusk carved in intaglio with three masks, and fitted with a shibuichi loose ring as an attachment, signed on the reverse: kohosai kore wo koku with a date of Genji first year, equivalent to 1864 [genji gannen kino-ne shunjitsu].
Diam. 5.3 cm
Ueda Reikichi records the artist aS living in Kawara-machi, Osaka and dying around 1907. Fuld lists his birth date as around 1869, clearly disproved by the inscription here.