Jacob & Co Astronomia Solar

About this reference

The Jacob & Co. Astronomia Solar 18k Pink Gold (Reference AS300.40.AS.AK.A) was introduced around 2017 as a more compact, wearable evolution of the original Astronomia. Collectors value this reference for the JCAM19 caliber, a 447-component manual-wind movement featuring a 10-minute vertical rotating platform with three arms. These arms support a flying tourbillon, a magnesium globe, and a differential-driven time display, all set against a baseplate of aventurine representing the night sky. The 44.5mm case utilizes a sapphire crystal monoblock side for 360-degree visibility. While the standard Solar is not a numbered limited edition, its complex assembly limits annual output. On the secondary market, this reference typically trades in the $180,000 to $260,000 range. A notable production detail is the "Planets" variant, which replaces the baseplate with semi-precious stone spheres representing the solar system, often commanding a premium at specialized auctions.