Artifact Details


Eight tube pluggable module

Catalog Number



Physical object



Identifying Numbers

Model number 50550 Stamped on metal sticker on back of module
Other number L14 Hand written in blue on top of module
Serial number 8055 Stamped on metal sticker on back of module


overall: 7 1/4 in x 2 1/2 in x 12 1/2 in


This is a plug in module built around a U shaped metal rod which serves as frame, handle and guide pins. There are 2 metal plates attached across the frame. The rear plate has a pair of Amphenol 32 pin finger connectors. The front plate has 8 socketed miniature vacuum tubes and 8 test points. A circuit board located between the front and rear plates has several rows of terminal posts. A variety of discrete components are soldered to the terminal posts on both sides of the board. The front plate has "TOGGLE A" printed on it.


Component/vacuum tube