1972 Omega Constellation Electronic F 300Hz (Ref. 1980003)

While today the Constellation line is overshadowed by Omega's Speedmaster and Seamaster models, the striking Omega Constellation family was once the flagship in the Omega collection. 

Dating back to 1952, the Omega Constellation has been regarded as one of the most luxurious and precise watch collections offered by the brand. Add to that the fact that they have always been chronometer-rated, and you have a watch that is not only stunning in nearly any setting but also incredibly accurate.

But even within a line as well-known as this, there can always be a few super-unique pieces that fly a little more under the radar. Case in point, this Constellation Electronic f300 Hz, ref. 198.003.

On the outside, it looks fairly simple, featuring a stainless steel case, a light grey linen dial, and a date window. But the real star of the show here is the chronometer-grade electronic tuning fork movement. It's an interesting piece of horological history that was around for only a short period of time before largely being replaced by quartz movements. 

Just listen for the hum instead of the typical ticking of a mechanical watch and you'll know why this is such a fun, beloved piece.