Nice Canadian CD 143 marked G. N. W. -- large bubble on front (see pic) and another almost as large on the back -- huge swath of carbon in the dome! Condition is nice with just a few small pecks, a light wire rub and a few tiny flakes around the sharp base. Great character piece! $75 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.