Swiss Hebdomas 8-Day Pocket Watch with Niello Floral Case

A beautiful union of artistry and engineering, this early 20th-century Swiss Hebdomas 8-day pocket watch captures the refinement of the Art Deco era. Featuring a remarkable eight-day power reserve,  the watch is a technical marvel that allows an entire week of operation from a single winding.

This example features a striking niello case, richly engraved with floral and foliate ornamentation, where silver inlay shimmers against a darkened ground to form a luminous contrast. The result is a design that feels both dramatic and architectural, creating a wearable piece of early modern art.

Opening the hunter-style cover reveals a porcelain dial with bold Arabic numerals, accented by delicate gold flourishes and blued steel kite hands. The skeletonized balance platform, visible through the cutaway aperture at six o’clock, offers a mesmerizing view of the oscillating escapement, underscoring the mechanical sophistication within.

Combining elegance, endurance, and innovation, this restored Hebdomas pocket watch is a fine testament to Swiss craftsmanship and remains a rare and fascinating collector’s piece nearly a century later.

Circa 1925