Good condition.
Signed and dated "70" on the lower right.
Signed, titled, and dated "1969" in the center on the verso.
There are some minor scuff marks on the edges of the corners and sides.

Certificate of Authenticity by Motonaga Archive Research Institution

Motonaga Sadamasa (1922 - 2011) was a leading figure of the acclaimed Gutai Art Association movement that rose to prominence in postwar Japan. Motonaga participated in most of Gutai’s early exhibitions, producing interdisciplinary material. Motonaga was inspired by the traditional Japanese painting technique of