Its not something I have ever used, or plan on for that matter. But at one time, wire wrapping was a thing and people even build computers like this back in the day. Could you imagine how hard it would be to fault find in that mess. HAHAHA.
Ok, well it was not one of the greatest mysteries of all time. Certainly not an Agatha Christie novel, but, I found out what this morse key actually is. The key itself was easy enough, its a PMG key from WW2, it was the base that I could not find anything about on google. Anyway it turns out that it was a lantern signallers key from WW2. Use for short range communications on the battle field and came in a metal case, with a battery and a hand held light. They are pretty common and not worth a lot. But, still an interesting bit of history none the less.
Here is a picture of one in mint condition, all bolted into the lid of the box that housed the battery and light.