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 neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/9c337e6e-cdad-422e-bf74-a3fd82ecac45%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.