This is a True Blue for this Insulator (Knowles blue) Spec Tru CN Slides 440+605 Second picture shows match. The insulator stands 4-3/8" tall. It has the [030] embossing however, THE / M& E Co is smudged or weak while the PHILADELPHIA IS CRISP AND BOLD, on the reverse KNOWLES / CABLE / INSULATOR is relatively bold and crisp. The insulator has a chip from the inner petticoat skirt about a half inch wide and the rear ear has a carbon fracture, I would assume from an arc of the wire or a lightnning strike resulting in several shallow fractures. their is a little saddle rub as well but very minimal. Presents mint from front and side but for a couple tiny flea bites.