Pocket Watch Database

Jeannot & Shiebler Watch Case Co.

New York

Initial Marking: J.S.

Location: New York

Years of Operation: c. 1892

Identification: The standard cases produced by Jeannot & Shiebler featured a JS monogram, typically place between the 1 and the 4 (for a 14K gold case) or the 1 and the 8 (for an 18K gold case). The company also supplied unlabeled and jeweler-labeled cases, which are more difficult to identify.

Generally, the company marked cases with "Warranted" slightly arched above and embossed eye-shaped element with "18" or "14" between two stars. Under the karat designation are the words "Carat Fine" arched around the bottom profile of the center eye-shape. The case serial number is marked underneath in an arched layout similar to the text above, with considerable space between each of the digits.

The J&S cases can quickly be distinguished by identifying the two stars on either side of the karat designation within the embossed eye shape.

Case Grades

Note: This chart is not intended to be a comprehensive list of grades. Some grades changed traits over time and other grades may not be listed. This chart will be improved as additional information is studied.

Image Name Case Material Gold Content Gurantee Source Catalogs Trademarked
Watch Case Marking for Jeannot & Shiebler Watch Case Co. 14K: JS 14 SJ Monogram 14K Gold 14K
Watch Case Marking for Jeannot & Shiebler Watch Case Co. 18K: JS 18 SJ Monogram 18K Gold 18K

Company Case Trademarks & Hallmarks