It's hilarious how in-demand split flap displays are now. When I was a kid they were the most hideous, common, primitive large display. We grew up with GE split flap alarm clocks, and I remember lamenting how lame they were compared to the big green LED alarm clocks. Nothing but motors and gears...no solid state, no lighting up, bah! Now everybody from Nixie guys to classic gameshow nostalgia collectors (yes, they actually exist and even have blogs) want a split flap display.
Flip dot matrix displays are a more compelling design. They're akin to direct-view core memory, which means they're the only way that most people can play with functional core memory at all.
No eBay APP ID défined in Kunena configurationBTW, flip-discs, mostly from bus route displays come up for sale on ebay from time to time, after all this talk I broke down and bought one of these; There are 3 more: