Almost looks like the fluorescent material was unevenly applied or delaminating somehow.. Like thick / thin spots or similar thickness or distance issue.
Does the anomaly align with the cathode heater wires? -- 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, visit https://groups.google.com/d/msgid/neonixie-l/122f5ac6-bc2e-416f-8a56-d0aef3a4ad67n%40googlegroups.com.
