OK, I have started the clock. Shall we place bets on when someone digs up real Burroughs Nixie that glows green? In the electron tube collecting world, weird "never" types are always popping up. Just the other day, someone discovered one instance of this (specifically, a type 41 from Speed that is not the same as the industry standard 41), and stumped the experts. So, it would not surprise me if Burroughs made some Nixies, perhaps as custom devices, low-runners, or even just lab animals, filled with a krypton-neon mix (yes, green). -- Will