At the time I bought, ~1980, I had to take them on their word. The ad offered used/pulls for $4 or NOS for $5 that were supposedly from a repair depot. The pins have no scratch marks and another good indicator is they are all Burroughs branded. Except for boards that may have had tubes replaced, all used tubes that were pulled from ticker boards I have seen are Ultronics branded.My first board had one Burroughs and one Ultronics tube. Someone repaired the board to display a dummy zero as there was an internal short in Ultronics tube between two segments. Not sure what caused the board to be a problem in the first place but it is possible it was subjected to some kind of mechanical damage that broke one tube and caused the segment short in the other. They replaced the broken tube with an "antenna" variety Burroughs tube and modified the board for the dummy zero. Really weird but it was almost 50 years ago now and who knows?
On Friday, April 3, 2020 at 11:05:21 AM UTC-4, [email protected] wrote: > > How could you tell they were NOS? I have this religious belief that > everything on the surplus market consisted of NYSE pulls, as suggested by > the words "removed from operational equipment". Did your NOS actually come > in Burroughs boxes marked with the tube type, or were they just covered in > bubble wrap? Did they look any different than the ones you got with the > boards? > > On Friday, April 3, 2020 at 7:44:07 AM UTC-7, Robert G. Schaffrath wrote: >> >> Yes, Meshna is where I got three boards from in 1979 and later on my >> seven NOS tubes. By 1980, the prices had almost doubled (used tubes were >> USD$4 and NOS were USD$5) which is understandable >> > -- 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 on the web, visit https://groups.google.com/d/msgid/neonixie-l/507d3392-d0cc-4f74-aa12-fbd16c7eeb8f%40googlegroups.com.
