In the past few years, we have covered a whole host of amazing Nixie clocks here. This WALL-E Nixie Clock by Monjibox is also worth a look. It is made from one large walnut piece and has Philips ZM1020 tubes. It can display time in 12/24 hour format. It can also show the date.
This Nixie clock has a backup battery to keep time in case of a power outage. It can account for Daylight Saving Time.