From Liz McGregor : This is a blue bowl, glazed interior, glaze finishes just before the foot of the bowl outside, with a brown stripe between. A clear mark on the base that looks like JB or GB?
tom parry - This looks to me like the mark of Ginnie Bamford who potted at Clock House Pottery, Tregony before moving down to the Sloop Craft Market in St Ives, now retired.
Hilary Hughes - This is Dennis Bullock's mark. He worked in Saltash and Pillaton, Cornwall in the 1970s, 80s and 90s. He died a couple of years ago. I can send a picture of the marks on pots I own if you want verification.
Hilary - (his name was John Dennis Bullock - known as Dennis but liked the monogram JB)