It came complete with instructions and a tube testing chart which lacks any GM (mutual conductance) values. This may have been intentional to simplify testing. The instructions give the parameters for the pass/fail (red/green) tests.. I suspect the GM settings were covered in a more comprehensive manual which was not included in this set.
All of the interior components and wiring were treated for fungus resistance. The benefit of this, beyond the lack of any moldy smell, was to preserve the components in a nearly new condition including the wire colors.
An interesting note "d" in the chart for most rectifiers, says that the best test is in circuit.