This module has a brown board with several components on one side. At the extraction end there is a metal bracket with four light bulbs going through it. There are two white stickers on the face of the bracket that read "411" and "LF." "TELEFUNKEN" is printed on the solder-side.
Printed in white along edge on substrate
On sticker on face of metal bracket at extraction end
Handwritten on a white sticker on the component-side substrate