In his world wide travels, LegionLabs picked up a little vacuum fluorescent display showing micro, amps and volts. Definitely a unique souvenir! I'd never worked with VFDs before, but in the end, they are quite simple. A hot filament emits electrons, which are evened out by a grid and then impact on fluorescent surfaces. They run at relatively low voltages, as compared to, say, Nixie tubes.
The leads are pretty easy to figure out just by examination. I followed the directions here and pretty quickly had it working.
I have no idea why there are so many leads on the tube. Theres only the three elements inside (micro, V and A), each element is connected to several leads, but they dont seem to be lighting up different parts - they are just redundant. Go figure.