We’re crazy about nixie clocks around here — you know, those exquisite timepieces using 1950s-style tubes? Well, this is not that. However, this Test Tube Digital Clock, with its numeric lineup of glassy-domed LED numerals, vaguely resembles that ancient object of our desire.

The good news: You could get five of these $75 knockoffs for the price of one genuine nixie clock. Considering that most people don’t have the foggiest idea what a nixie clock is, anyway, maybe you could just save your money and check this one out. You could probably fool most of the people most of the time.

But for us, well, there’s nothing quite like those old-fashioned vacuum tubes, with their warm glow and retro-coolness. See if you can tell the diff between this clock and the real thing in the gallery below.