This module has a light green board with various components. At least ten of those components are labeled with "863" stickers. The black metal extraction handle is held in place with three rivets. On the circuit side "TELEFUNKEN" is printed in silver parallel to the extraction handle. On the substrate there are two square inspection stamps.
Handwritten in ink on white sticker on face of extraction handle
Printed in silver on solder-side of module parallel to extraction handle
55.312. 303-00 b/-
Stamped in white on the extraction handle on the solder-side
Printed on cloth stickers on components
Found on component-side substrate at insertion-end and on the solder-side at the extraction-end