CP T P
Posted: Thu Oct 08, 2009 4:42 pmThis may become a duplicate posting as I did post it in the old forum.. Some time this summer I came across a U-2421 brown cabletop. Perhaps the most common porcelain insulator found around here. Just happened to notice the inkstamp was not the usual black CP. Thought some of you may be interested and could perhaps add some info about the marking.