A guy responded to my ad and said he had 4 insulators. I'm thinking probably 4 common ones, but I went to meet him anyway. Imagine my surprise when the first one he pulled out was an immaculate ice green CD 254 Hemingray 63 [050]. The CD 102 Brookfield is ok, and I'm not sure what the porcelain is... looks like a U-790, but it has no markings. He told me he found these along the tracks in Trafford PA when he was a kid.