Vintage Set of Four Black Stoneware Cereal Bowls

This is a lot of four vintage stoneware cereal size bowls. Three of them are the same and the fourth is the one labeled “Stonewarw Japan”. It is slightly thinner on rim and lighter than the other three but they all are so similar I didn’t notice at first. Only minor pecks on bottoms of two bowls but no major issues with them. Thank you for looking and I am open to reasonable offers ! (Cross posted. )