Here is a neat toll -- I believe it is EIN [090] and is in a great blue!

CD 121 AM TEL TEL CO -- blue -- small rough spot qn the wire groove, small base flake -- $25 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.