I bought this cheap at a flea market recently along with a couple other pots. I loved it because the fit of the lid is super tight and clean! The water flow slows when you put your finger on the ventilator! I’m trying to figure out where it’s from. A quick google search showed similar kyusu linked with Tokoname, but I don’t know what to look for.
I also can’t tell if this is a burnish, slip, paint finish etc... Help!