It is an interesting piece of history, because the LED marks the beginning-of-the-end for nixie tubes.
Happy birthday, LED. 50 years old now......... -- 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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/799471b7-e9e0-41f3-abde-520ede547b63%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.