It’s from a Windy II - A68LBT696X. But great spotting @trashedcabs. I had to use a torch for that photo because it was backlit so much. I wasn’t even looking that far up. I’m just making sure there’s nothing else to consider @chickentendees before I toss the tube. I don’t know what blue electric arcs mean. I’ve never seen it before and thought maybe it was the dud chassis.
Funnily enough - while swapping the 2930 frame I had on it for a junk frame before tossing it - I knocked the neck off by accident. It’s interesting to see where the arc blew a hole.