Here is an insulator that I haven't handled too many times . This CD 151 is a light green color and embossed with a number 7 on both sides of the skirt. I have shown you the "pretty boy" side and it is quite impressive. BUT on the reverse side, one inch to the left of the embossed 7 is a 3" vertical crack from the base to above the wire groove. There is also a 2' base chip just to the right of the 7, same side as the crack. I still think this is a pretty neat insulator and perhaps a bit under-rated in the price guide. My price is $50 plus shipping.