This is supposedly a Japanese pot that is allegedly 20-30 years old. I don't know anything about it other than it seems like a nice pot with a beautiful glaze. Maybe it's Chinese ? Maybe the mark says "Walmart" ? Thanks for any info you can give.
It does not appear to be Japanese made pot to me, but I could be wrong. This site contains a comprehensive database of seal, chop marks from artists in Japan and China as well. Good luck