There is actually a photo of them glowing individually here: http://www.radiomuseum.org/r/leybold_impuls_zaehlgeraet_55952.html , you just had to press the button "Next Pictures" below the photos and scroll down to see them in full glory!
/Martin -- 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/8e8c2418-3bff-475e-a6df-0085668349ab%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.