This listing is for an authentic vintage Keystone J. Boss swing pocket watch case, crafted in 10K gold-filled finish. Designed for traditional pocket watch movements, this case is ideal for restoration projects, movement fitting, or collector completion.
The swing-out mechanism allows the inner case to open smoothly for easy access to the movement. As a preowned vintage case, it shows moderate wear consistent with age but remains well-preserved with strong hinges and an intact structure.
Case, Crown, Crystal Only — no movement included.
Perfect for watchmakers, restorers, and collectors seeking an original gold-filled J. Boss case from a respected American manufacturer.
| Brand | Keystone Watch Case Co. |
| Model | J. Boss Swing Case |
| Type | Pocket Watch Case (Case Only) |
| Era | Vintage |
| Material | 10K Gold-Filled |
| Style | Swing / Hinged Case |
| Compatibility | For pocket watch movements (exact size unknown) |
| Condition | Preowned – Good vintage condition |
| Inclusions | Case only |
Genuine Keystone J. Boss 10K gold-filled swing case
Classic vintage American pocket watch component
Strong hinges and functional swing mechanism
Great for restoration or completing a build
Highly collectible original case
vintage pocket watch case, Keystone J Boss case, gold filled pocket watch case, antique pocket watch parts, swing out watch case, J Boss 10K GF case, watchmaker parts, pocket watch restoration, US vintage watch case, Keystone watch Co case, railroad watch case, collectible watch hardware