Been without a bridge for my bench for far too long, I understand this will also perform capacitor leakage tests at high voltage, which is nice since I have a few old caps that are in unknown condition.
Turns out the tight fitting box it is nested in is more or less correct, also included was the 950B operations manual. I wonder if this was an early B revision that was using up old faceplates, or if something else was afoot.
Thankfully the tag was fresh enough to remove with little effort, there is a bit of a patina loss where the tag was situated, but I can live with that.
I found this thread outlining a failure mode that happened to two different people, in perusing the manual I note mention of moving slowly with certain controls. I like stuff that works, so I will read, understand and heed these warnings (even if it sounds like we're looking at a design flaw of the unit).
Guts! Pretty clean work for a kit.