Diamond shape
— 27/09/2021Found at the old James Dougall works, Bonnyside, Bonnybridge. Unidentified maker. Find location would suggest Scottish origins but … Considering the find site, this may well be a James Dougall product. It may also be an early Dyson Refractories product. They took over the Bonnyside Works from Dougall and their emblem, which appeared on many…