For your viewing pleasure, what I believed to be a Swedish porcelain. The top is very similar to 3 insulators that James Bancroft gave me after a hunting trip with Fredrik Hojefalt in Sweden. Different in this one are the sloped sides. Also, front and center is the Bullers logo.

Revision: According to Fredrik Hojefalt of Sweden, this insulator is from Norway. Likely to be Bullers production for Use in Norway. Does any one have similar? I have heard that Schomburg produced this same style insulator marked 1914