We found these Japanese bowls in Antwerp. I thought they were stunning and had never seen anything marked like these. When we returned home from holiday… I just had to look them up.
The Juzan Gama Pottery, I believe are a 20th c. modern Japanese porcelain bowls manufactured by 壽山窯 Juzan Family Kiln (Juzan gama).
Juzan Kiln, aka Juzan Gama, still operates today and is located in Nagasaki, Japan producing table wares under the name Juzan Toki.
Juzan Gama produced wares are called Hasami-yaki. This particular style seen on the outside of the bowl is made by what is called chattering kana.
The kana scraper, a metal tool, is held onto a leather hard, unfired bowl, and the bowl is spun. The kana jumps up and down, chatters, across the surface to produce the regular markings.