Vintage studio pottery serving dish

Lovely wabi-sabi aesthetic, unsure of vintage but possibly 70s, no clear makers mark but there appears to be some sort of stamp on the bottom, subtle green and gray notes to the interior glaze, exterior is mostly unglazed. No functional or structural issues of note. Can be used as a serving dish or simply as decor. I cannot confirm if the glaze is lead-free. 10.25” diameter across widest point 9” diameter across narrowest point 2.5” height