Many posts have images attached but you need to be a registered user to see them.
Hi, are you sure it is PB ? could you get a clearer photo?
It would seem to be stoneware, reduced but slightly oxidised as it shows typical green/pink variations of copper oxide. The texture is from the use of a twisted wire used to cut the sides of a thickly-thrown pot. We don't recognise the mark; I assume your members have access to Robert Fournier's book on studio pottery marks. It could be in there.