Another japanese dish with mark

[ssbill]

Hi stan,
I couldn't find the mark online. I'm hoping you can help me to identify this one. Thanks.

[Stan]

Hi Ssbill, you must have stumbled on to a collection, these plates are rare and very collectable, this is a Seiji Kaisha mark, the pure water company, founded by the four original members of the koransha company, 1879 to 1883 another nice find.