Clearly you 'need' one of them new fangled Nixie ones then eBay auction: #323786990496
That's a close shave: they don't ship to the UK.
I have test equipment with Panaplex, LCD, LED (including dots rather than segments), CRT, dekatron displays - but no nixies.
The completist urge in me is becoming unbearable. So far I can suppress it by not searching for "nixie".
Hu? How did you manage that? I have TE with Panaplex, LCD, LED (alas not real dotted ones, but 2-part segments), VFD, CRT, Nixies - but no dekatrons.
Nixies are easy to find and sometimes even cheap. Dekatrons never turned up in my searches. And it certainly is not because I avoid them ...
Drat: forgot the VFD in my Solartron 7081.
The dekatron counter is this
this Griffin Geiger counter. Getting it was mildly interesting. I saw it in an auction within travelling distance, but before I bid the venue was changed to be "too far to bother". A few weeks later it materialised at a hamfest, so I snapped it up.
The dotted display is an HP5302A like
Anybody want my
spare Solarton 7075 DVM, with Panaplex goodness, a lead (Fischer connector!), and custom carrying case? That will leave me with only two panaplex DVMs.