The trilogy by Ludwig Oechslin for Ulysse Nardin
Introduced between the late 1980s and early 1990s, this trilogy consists of three iconic watches: the Astrolabium Galileo Galilei, the Planetarium Copernicus, and the Tellurium Johannes Kepler.
The final model of the trilogy, the Tellurium Johannes Kepler (illustrated here), was introduced in 1992. This watch represents the Earth as seen from the North Pole, rotating on its axis, with displays of solar and lunar transits. It also shows solar and lunar eclipses, moon phases, and the boundaries of the Earth's oceans and continents.
These watches revolutionized watchmaking complications by integrating complex astronomical displays into wristwatches.