They are Richardson tubes, wasn't Richardson known for re-marking tubes with the date code corresponding to the time of re-boxing?
Terry On Thursday, May 4, 2017 at 11:25:30 PM UTC-5, gregebert wrote: > > These are noticeably larger than the more-common 0.6" b5092s. > Not my auction, but I bought a lot of 6 (new-in box/mint condition). > Apparently the seller has a stockpile. > > > http://www.ebay.com/itm/6-PIECES-NOS-type-6091-8423-NATIONAL-NIXIE-TUBES-Large-Top-View-GUARANTEED-NEW-/172657232661?hash=item28332c4b15:g:-KAAAOSwo4pYl55u > > I was surprised to see the 8522 date-code; the only other tubes I've > encountered that were manufactured more recently are from the USSR. > > -- 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/6b040af4-29b7-460e-831e-a324ec16efca%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
