Price: TBD, currently $103 on eBay
I just found this clock on eBay from a new seller, Pixeldesign2009. It is based on a Russian IN-8-2 tube and has a built in time base. No more information is provided via the auction other than it has a "built in RTC clock." I am guessing that it is just an inexpensive mechanism as precision does not seem to be the focus of this device. Additionally, based on the description, this appears to be 24-hour mode only. Lastly, no information is given on whether this is a directly driven display or multiplexed.
With all of that said, this could be a nice addition to any collection. The tubes are pretty small and while no dimensions are given, I am guessing the clock is no wider than 6 to 8 inches. The case appears to be a black plastic and does not appear to be a kit of any kind. For $100, this isn't a bad deal.
I contacted the seller via eBay and asked for more information on this device. The following information was provided: