Just got back from Ontario Canada from hunting a line that was fitted with M-3068s . These rare CP(canadian porcelain co.) 3 part porcelain insulators are definetly not scattered at every pole. I found shells and or pieces to one top at only three pole sights so far and I will say by luck only. I have seen 80% of this line and am starting to wonder if they were just replacements for the Fred Locke M-3060s. They are about the same size and looks. These are the pieces composed of two years looking. Now add glue.