This CD 110,5 has always been a favorite with collectors. This one is base embossed + NAT. INSULATOR CO.+ PAT. MAY.1.DEC.25.1883 JAN.1.OCT.7.1884. There is a flake that takes out the top half of the letters ATO. There are two chips on the bottom ridge of the wire groove. Each is about 1/2" in length. One is located right on a mold line and the other is 1" away from the mold line on the opposite side. There is a large number 1 embossed on the dome. $55 plus shipping seems like a pretty fair deal.