After a quick search of nixie tubes in eBay, found an add of a japanese calculator which appear to use orange VFD tubes. No colour film is over the tubes, so those are quite interesting, maybe some type of filament tubes? Have you ever seen something similar?
Might be some kind of nixie tubes <https://i.ebayimg.com/images/g/0voAAOSw4Yteurlv/s-l1600.jpg> -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f977e62e-3886-4620-a745-199bc4225778%40googlegroups.com.
