Swiss skeletonized eight day lever with visible balance Circa 1985

Gilt eight day open faced pocket watch
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Rare, new-old-stock Swiss gilt skeletonized eight day going pocket watch, the Hebdomas Skeleton Limited Edition, circa 1985. The skeletonized keyless eight day movement with a lever escapement and a large, open work mainspring barrel covering the reverse of the watch. The front featuring a burgundy red enamelled chapter ring with black enamel hour baton and Roman numerals, further original, decorative hands, a finely engraved bridge below over a visible balance. The case is glazed on both sides.
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Diameter: 49 mm
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Weight: 84 g
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Signed: Hebdomas 102 Swiss made No. 1198
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The name Hebdomas is derived from the Ancient Greek word for week/the seventh day. It refers to the watch’s ability to run for at least a week on a single winding.

A Hebdomas pocket watch is a timepiece known for its eight day, hand wound movement, off center time indication and a visible balance wheel mounted to a dial side bridge, a feature that makes Hebdomas watches instantly recognizable, and is typically gilded and engraved with a decorative floral motif. A massive mainspring barrel covers the entire diameter of the movement, rotating around the center similar to an automatic rotor.

Most Hebdomas watches feature the name centered in the dial and 8 Jours engraved on either side of the balance. Mostly also featuring a flower or arrow design above.