Author from Tochigi or Ibaraki Prefecture Work by Yuzuru Harada The black spots are scorch marks that were present from new. It was used for display purposes only, not for dining. It was featured in Fujin Gaho (a Japanese lifestyle magazine), and purchased in 2023 for 55,000 yen. The color is closest to the last 8th and 9th photos, a yellowish cream color. The rim looks like unglazed pottery, and appears to have fine scratches on the white parts. Please see the last two photos.