Here are some of the insulators I picked up at an estate sale in PA yesterday. I had to drive 4 hours one way. The CD 164 BGMCO is the best of the lot. The green toll is a C & P Tel Co, The CD 126.3 W Brookfield has the best embossing I have ever seen on one of these. The big Brookfield signal on the lower right is actually a CD 134 because it does not have an inner skirt.