Yes, these tubes are what the Industrial Alchemy guys dubbed the 'transitional tube'. But that's not the case - it was just their speculation.
There seems to be a batch of these things floating around, though Nick may have fully cornered it now :). All are marked in the same way - note the absence of manufacturer name and date code. On a small minority of tubes from the batch it is possible to make out residues of previous standard Ericsson GC10A markings - another chap from here and I did a bit of work on that together some years back as we had both come across examples. Given that observation and that these things look and behave just like GC10As (same colour glow, same slow max speed etc), I think Occam's razor guides us strongly towards the tube washer rather than the novel tube... Having said that, there *was *a developmental tube made en route to the definitive GC10B. But it wasn't marked like this and the glow colour is neon orange not purple/pink. Jon. On Sunday, March 12, 2023 at 12:19:41 PM UTC padlernped...@gmail.com wrote: > This article from industrialalchemy.org might offer an explanation. They > could be these “transitional” GC10Bs. > > https://www.industrialalchemy.org/articleview.php?item=1118 > > -Randy > > On Mar 11, 2023, at 9:45 PM, Nicholas Stock <nick...@gmail.com> wrote: > > > > Fellow lovers of all things neon... > > I have a bunch of GC10As that are actually rebranded GC10Bs. They're still > NOS and functional, but aren't infact GC10B's.... evidently this was a case > of an unscrupulous individual or individuals back in the day with a load of > GC10A's on their hands after the superior GC10B hit the market and deciding > to 'rename' them. Anyway, I have some for sale at $15 each. Let me know if > you're interested via private email. > > Cheers, > > Nick > > > [image: IMG_3614 Large.jpeg] > > > -- > 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+...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRH%2BbjYEYyHCnSUH-QDFRs3YNrFNGFE_BxgONM21EKbgDFA%40mail.gmail.com > > <https://groups.google.com/d/msgid/neonixie-l/CAOX%2BRH%2BbjYEYyHCnSUH-QDFRs3YNrFNGFE_BxgONM21EKbgDFA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/8f80c187-2a7e-4015-ac14-d1a9eaa933f5n%40googlegroups.com.
