CD 253 KNOWLES / CABLE INSULATOR // "PATENTED JUNE, 17 1890" -- aqua with nice snow -- also a great amber swirl in the ear! Nice condition with a short annealing line on the inner skirt and a few tiny pings -- $70 plus actual postage.

NOTE: I'm selling these insulators on behalf of the Jim Fielding estate -- PayPal (no fee friends and family) or checks are both accepted - I'll provide instructions. I'll also be handling all the packing and mailing.