Guys need help in identifying several ceramics

oops sorry about that. il do it next time. by the way the letters are the japanese or chinese.

 

and by the way oatmeal glaze was popular among 1970s right? or earlier than that @khl889

 

On which one?

Japanese and Chinese both use Hanzi/Kanji characters, which are so-called ideograms. The characters are not separate letters making up a word, but little stylized pictures that reflect a certain meaning or idea. Hanzi is the Chinese word for this way of writing, Kanji the Japanese.
Hanzi was originally used for religious purposes. The broader use meant that people with different languages could understand each other through writing.
Although Japanese and Chinese both use Hanzi/Kanji, the meanings can differ. And Chinese has more characters than Japanese.

 

@Any Jewelry this one

 

@Any Jewelry what is your opinion regarding this one

 

I can't see any letters. Could you be referring to the leaf pattern?

 

yes the 2nd image of the leaf pattern. on the bottom of the plate. oops is it a leaf pattern. lol i thought it a letter

 

@anyJewelry i poster some plates, i think it might interest you.
https://www.antiquers.com/threads/several-plates-any-idea-of-its-origin.16313/#post-226412