The pleated skirt. Probably one of the most popular insulators in the hobby and why not. Besides enjoying looking at it, you can count the pleats and report back to Icon. On the dome it is embossed PAT'D SEPT. 19TH 1899 There is what really appears to be a BB ding on the skirt. It is about 1/4" in diameter. Otherwise the insulator is very attractive in a blue-aqua color. $30 plus shipping. How about $30 and I pay the shipping.