I took a closer look at the picture. It looks like there is a small 4-digit number outside the octagon which I interpret as "5944". There is a larger 4 digit number inside the octagon which I think is "7?25" (where the 7 is clear, the ? is unreadable, and the 25 is my best guess). Both of these seem inconsistent with 7236.
Also, I only see one off-center orange glow in each tube, and I would expect two in a dual triode. -- 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/20e8a9a3-b970-436a-bdfc-79d796ce3a8cn%40googlegroups.com.