hello, i have just joined this group, i also have a black cauldron with the thistle mark,it was my grandfathers and i have no idea were he came across it, i was trying to find out who the manufacturers, are when google returned this enquiry, i can see that you are the experts in this field so i will continue to hope you are able to find any information, that may be found,
i will head of in a different direction as a cauldron is not an everyday item and given the bad reputation that is associated with its users i would not think to many people would be keen to purchase this shape of vessel, i know i have a vivid imagination, so please do feel free to laugh, or cackle as the case may be,
bye for now
elle