Vacuum tube type 5WL5Q5 box
The object is a cardboard box for a vacuum tube. The original model number has been crossed out in pencil, and "6SL7" written next to it. The box did not contain a vacuum tube when cataloged.
Cornell-Dubilier Electric Corporation
||Model number of vacuum tube this box used to contain.
overall: 1 3/4 in x 5 1/4 in x 1 3/4 in
Gift of Gene M. Amdahl