One of the things that I've always wondered about... but if these were really painted in radium or tritium, they would still be hot, right?--even if they don't glow and the half lives have diminished and all that?
I may have to get one of those surplus geiger counters at some point. Would be pretty cool to know if the lume was real or not on a watch, and if some redialer is going to go to so much effort as to risk radiation sickness to make a replica dial, well then I'm content being fooled on those.