By Mary Ann Pike; posted June 17, 2014 View Original: Click to zoom, then click to magnify (3264 x 2448) 3000KB
Porcelain insulators found in an antique shop in Owen Sound, Ontario. Left unmarked, LM incused marking on spool, 3rd marked CP, I think, blue is Ohio Brass, Johnny ball is etched CP, I think, with numbers etched outside the letters.
