Pocket Watch Database
Invisible Joint Watch Case Co.
Chicago, Illinois
Location: Chicago, Illinois
Years of Operation: 1884 - c.1885
Predecessor: Blauer Watch Case Co.
Otto Young and others incorporated the Invisible Joint Watch Case Company to manufacture watch cases with a patented hidden hinge. These cases were almost certainly manufactured by the Blauer Watch Case Company (Otto Young owned a controlling interest).
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 |
|---|---|---|---|---|---|---|
 |
Invisible Joint Coin Silver | Coin Silver | 1885OY, 1886HMS, 1888OY |