Here is a relatively uncommon CD 138.2 (base) THE STANDARD GLASS INSULATOR CO. // BOSTON MASS -- just a couple of tiny pings plus flat chipping a little over halfway around the top of the pinhole (not seen during normal display). $110 plus actual postage.

NOTE: I'm selling these insulators on behalf of the Jim Fielding estate so currently all payment must be by check (no PayPal). I'll be handling all the packing and mailing.