Epos 3439 Classic Moon Phase Keeping track of the phases of the moon probably sounds silly to most, but for the most part of human existence, we have used the moon as a way to track time. This is why moon phase watches, first pocket watches and then in 1925, wristwatches, have always been a very popular complication. The Epos 3439 Classic Moon Phase is a beautiful piece from the almost 100-year-ol...