I’ve got a vintage HP digital counter, model HP-5216A. It was working, right up until the moment that it fell and broke two of the tubes’ glass envelopes.
I really don’t know where to source Nixie tubes. I see a few people who are making clocks with them, but not selling individual parts.
It’s apparently an HP-1970-0025, which is a rebranded Burroughs B-5560.
Don’t imagine this is the right place to find them, but I’m hoping it’s the right place to find someone to tell me the right place to find them.
Oh right. It’s been so long since I used eBay that I forgot entirely about saved searches.
I’ll definitely do that, and keep looking for other sources/options.