CD 263 COLUMBIA (base) PAT JUNE 17, 1890. AUG 19, 1890. MAY 12 1891 * OAKMAN M'F'G CO BOSTON -- great blue -- flat base chip takes ON out of BOSTON plus a small flake and two open bubbles - overall very nice! $135 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.