CD 253 KNOWLES / CABLE INSULATOR // "PATENTED JUNE, 17 1890" -- awesome yellow green -- there are three short annealing lines up from the base that do not go all the way though the glass. One is between EN in patented, the second is right before 1890 and the third is right on the right mold line -- there is a small flaw on one of these so I suspect they have been there from the factory. Only other issue is a small nibble on the inner skirt -- awesome piece in a beautiful color! $325 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.