This tray was used for ritual offerings in a Shinto shrine. It was made by whittling the rotated camphor tree and applying cloth around the rim under the lacquer. The scratches on the surface were probably made when the offerings were cut on the tray.
For further examples with similar inscriptions treasured in the Suwa shrine in Miyakonojo city, Miyazaki prefecture, see:
Miho Museum and Kawada Sadamu ed., Shuurushi Negoro Chusei ni saita hana [Negoro: Efflorescence of Medieval Japanese Lacquerware], (Tokyo, 2013), p.64-65, 355
Kawada Sadamu, Negoro Lacquer, (Kyoto, 1985), p.72-73 and p.319
Another example from the same shrine is registered as a Tangible Cultural Property of Miyazaki prefecture on the official website of Miyakonojo city, go to: