This is a CD 110.5 base embossed Nat. Insulator Co. with the patent dates. It does not have the segmented threads. There is a small open bubble at the base that does not affect the embossing, a small lower wire ridge chip (see photo), and a small nibble chip on the back side middle screw ridge. Asking $85.00 and that includes shipping to your U.S. address. OK, how about $75.00 PPD. How about $70.00 PPD? Taking it down to $65.00 shipped in the U.S. Final discount. $55.00 shipped to the U.S.