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Keystone Watch Case Co.
Keystone Watch Case Co.
Boss Scale 10K/15YR
Keystone Watch Case Co. Boss Scale 10K/15YR
![Watch Case Marking for Keystone Watch Case Co. Boss Scale 10K/15YR: [Scales]](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Scales.jpg)
Note: Case manufacturers modified markings over time. As a result, the image above is simply a representation of one particular marking used by the company. Your case marking may differ based on the production era and other parameters.
Boss Scale 10K/15YR
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4 Admirations
| Serial No.: | #1B2286 |
| Manufacturer: | Ball - Hamilton |
| Grade: | 999b |
| Size: | 16s |
| Model: | 5 |
| Jewels: | 21j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1946 |
| Case Model: | J.Boss |
| Case Material: | Goldfilled |
| Gold Karat: | 10 |
| Case Serial: | 9240357 |
| Added By: |  GrizzlyBear |
7 Admirations
| Serial No.: | #22554694 |
| Manufacturer: | Elgin |
| Grade: | 453 |
| Size: | 16s |
| Model: | 15 |
| Jewels: | 23j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1920 |
| Case Model: | J.Boss |
| Case Material: | Goldfilled |
| Gold Karat: | 10 |
| Guarantee: | 20 |
| Case Serial: | 9338317 |
| Added By: |  ultimatekaiser |
3 Admirations
| Serial No.: | #637312 |
| Manufacturer: | Hamilton |
| Grade: | 936 |
| Size: | 18s |
| Model: | 1 |
| Jewels: | 17j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1909 |
| Case Model: | J.Boss |
| Case Material: | Goldfilled |
| Gold Karat: | 10 |
| Case Serial: | 9502522 |
| Added By: | GrizzlyBear |
2 Admirations
| Serial No.: | #2502036 |
| Manufacturer: | Hamilton |
| Grade: | 992 |
| Size: | 16s |
| Model: | 2 |
| Jewels: | 21j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1928 |
| Case Model: | J.Boss |
| Case Material: | Goldfilled |
| Gold Karat: | 10 |
| Case Serial: | 9531211 |
| Added By: | JeffProd47 |
