
Undated
精巧山造
Four-character square signature without the Yasuda emblem or Shimazu crest; the handwritten number is a collection mark.
Pottery & porcelain · a closer look
This four-character brush mark dates to the Meiji era and differs from later printed labels.

Undated
Four-character square signature without the Yasuda emblem or Shimazu crest; the handwritten number is a collection mark.

Undated
Gold square seal with the full Yabu Meizan name; the same seal format appears in a 1904 advertisement.


Undated
Yasuda emblem supplies a proposed post-1896 limit; a different Ryozan spelling need not identify Okamoto.
