[jmac3ky]

Several times over the years I have replaced rare glass tubes with available metal tubes. When they are shielded, many of the sets like Philco have a bottom part of the shield that surrounds the socket. The metal tube won't fit through the base shield opening. The rivets must be drilled out and the entire shield removed, ruining the original look of the chassis. I recently found one lone adapter that goes through the small opening at the shield base and then extends about an inch to another socket. The metal tube easily plugs in and the original tall shield can be placed around the metal tube without touching it.

Does anyone know where you can purchase such adapters?