H. Moser & Cie Cylis Watch US Signal Corps Pocket Watch Conversion

Technical characteristics

Type

Pocket watch conversion wristwatch

Maker

H. Moser & Cie

Width

54mm

Crystal

Plexiglass

Winding

Manual

Dial Color

Silver

Lug Height

75mm

Case Material

Stainless Steel

Place recorded

Switzerland

Maker / attribution

H. Moser & Cie.

Design

Visible features

• Sub-seconds register is positioned at the 9 o'clock position on the dial • Onion-style winding crown positioned near 2 o'clock relative to the converted dial orientation • Articulated wire-style loop lugs attached to a brown leather strap • Dial is inscribed 'H. Moser & Cie / Cylis Watch' below 12 and 'Signal Corps U.S.A.' above 6

Dial and Case Architecture

The case is constructed from stainless steel, measuring 54 mm wide by 75 mm in lug height, and is fitted with a plexiglass crystal and articulated wire-style loop lugs accommodating a 20 mm leather strap. The seller describes the case as showing very light wear, grading condition at 9/10. The silver dial features blued steel hands, primary Arabic hour markers, and an inner numeric track accented with red. Direct dial markings include "H. Moser & Cie / Cylis Watch" printed below the 12 o'clock marker and "Signal Corps U.S.A." printed above the 6 o'clock position.

Object Identity and Conversion

This timepiece is catalogued as an oversized pocket watch conversion attributed to H. Moser & Cie, titled "Cylis Watch". The seller suggests that the piece originated as a pocket watch produced around 1910 and was subsequently converted into a wristwatch, resulting in a large case width of 54 mm and a total lug height of 75 mm. The dial configuration is unusual for a converted pocket watch: rather than positioning running seconds opposite a typical stem location, the sub-seconds register is situated at the 9 o'clock position on the dial, with an onion-style winding crown positioned near 2 o'clock relative to the converted dial orientation.

Mechanical Movement and Documentation Limits

The watch features a manual-winding mechanical movement, but specific internal movement specifications—including caliber reference, jewel count, and power reserve—are listed as unknown, and no internal movement photographs are provided. The seller states that the watch was running and functional when catalogued, though it had not been serviced prior to receipt. The purported connection to the United States Army Signal Corps and the date of circa 1910 are based on seller belief and the dial inscription. The listing notes that no box or papers are present, and no official military records or conversion documentation are recorded in the source to confirm provenance or the modifier.

Identification

Source note

Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.