WLS 4621Full Wave Gas Rectifier~1926
WLS tubes were sold by Sears Robuck under the WLS trade name. The 4621 was similar to the Raytheon BH.
Click the back button on your browser to return to the thumbnails
WLS tubes were sold by Sears Robuck under the WLS trade name. The 4621 was similar to the Raytheon BH.
Click the back button on your browser to return to the thumbnails