Here is a cable insulator in a gorgeous yellow green that glows, looks much better in hand than my picture shows. Its embossed "Knowles/No.2 Cable [Slug Embossing]" rear "[Arc] Patented/ Prism/ June 17. 1890" EIN [030]. This piece will never need upgrading as it looks Mint. Asking $135.00 + shipping. PayPal accepted in family/friends gift mode and also cheques.