It appears that it may have black paint covering the lower portion of the front, hiding the anodes? I have an NOS SP=353 sitting here, it appears to be 3/4 of what you have. There is no black band across the bottom, and the name and part number are etched into the glass at the lower left corner. Perhaps you could carefully try removing some of that black stuff with acetone or lacquer thinner, and see if there is a part number under it?
On Tuesday, June 11, 2019 at 6:58:35 AM UTC-7, martin martin wrote: > > > There are no markings on the tube... > > -- 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 post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/dd36ca25-b2af-4c42-b1c0-51851386ff24%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
