Insulators as follows:

CD 253 KNOWLES CABLE / INSULATOR / "PATENTED JUNE 17, 1890" -- Aqua with some green swirling in one ear -- VNM -- $45

CD 259 -- CABLE (skirt), Base OAKMAN MFG. Co & patent dates, aqua with a great bubble in the center -- VNM -- $25 (SOLD)

Actual postage additional