CD 145 [040] AM. INSULATOR CO. N.Y. DOUBLE PETTICOAT / PAT'D SEPT. 13, 1881, NOV. 13, 1883. A bit of white crystaline in the glass. V on the dome with a lack of threads almost entirely above the wire groove. Distorted threads below the wire groove and a particularly deep petticoat. Distinct period in the center of the skirt just below the wire groove. Perfectly centered from the mold lines so I believe it to be deliberate. Same exact mold as the previously listed American. Price $20.00 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.