CD 145 [020] (Dome) XI (Base) AM. INSULATOR CO. N.Y. DOUBLE PETTICOAT/PAT'D SEPT. 13, 1881, NOV. 13, 1883, FEB. 12, 1884 BE. American blue with brown milky snot stringer in the dome and again below the wire groove. I've positioned it in a way to show both the impurities but you could turn it to focus your attention more on one or the other. Typical nearly nonexistent distorted threads that are pushed up on one side. A tiny peck or 2. The general consensus would be VVNM for a piece of this age. View original & grab a Kleenex. Premium piece without all the premiums. Price $40.00 plus shipping (or no shipping if you are going to the Shrewsbury show this Saturday). First email as always. PayPal welcomed. Contact me first for details.