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Keystone Watch Case Co.
Keystone Watch Case Co.
Boss Scale Crown 14K/25YR
Keystone Watch Case Co. Boss Scale Crown 14K/25YR
![Watch Case Marking for Keystone Watch Case Co. Boss Scale Crown 14K/25YR: Keystone
Watch Case Co.
[Keystone Block]
[Crown and Scales]
J.Boss
25 Years](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Boss-25Years.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 Crown 14K/25YR
Find Boss Scale Crown 14K/25YR Cases For Sale on eBay See What Other Boss Scale Crown 14K/25YR Cases Have Sold For on eBay![Watch Case Marking Variant for Keystone Watch Case Co. Boss Scale Crown 14K/25YR: Keystone
Watch Case Co.
[Keystone Block]
Guaranteed
J.Boss
25 Years](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Boss-25Years-2.jpg)
![Watch Case Marking Variant for Keystone Watch Case Co. Boss Scale Crown 14K/25YR: Keystone
Watch Case Co.
[Keystone Block]
[Crown and Scales]
J.Boss
14K
Gold Filled](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Boss-14K.jpg)
![Watch Case Marking Variant for Keystone Watch Case Co. Boss Scale Crown 14K/25YR: Keystone
Watch Case Co.
[Keystone Block]
[Crown and Scales]](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Crown-Scales-3.jpg)
![Watch Case Marking Variant for Keystone Watch Case Co. Boss Scale Crown 14K/25YR: Keystone
Watch Case Co.
[Keystone Block]
[Crown and Scales]
J.Boss
25 Years](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Boss-14K-25Years.jpg)
![Watch Case Marking Variant for Keystone Watch Case Co. Boss Scale Crown 14K/25YR: Keystone
Watch Case Co.
[Keystone Block]
[Crown and Scales]
Guaranteed
J.Boss 14K
25 Years](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Boss-14K25Years-3.jpg)
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3 Admirations
| Serial No.: | #897889 |
| Manufacturer: | Hamilton |
| Grade: | 972 |
| Size: | 16s |
| Model: | 1 |
| Jewels: | 17j |
| Setting: | Pendant |
| Finish: | Nickel |
| Est. Date: | 1913 |
| Case Model: | Jboss |
| Case Material: | Goldfilled |
| Gold Karat: | 14 |
| Guarantee: | 25 |
| Case Serial: | 5063753 |
| Added By: |  rjandladyj |
4 Admirations
| Serial No.: | #11466357 |
| Manufacturer: | Elgin |
| Grade: | 214 |
| Size: | 18s |
| Model: | 8 |
| Jewels: | 23j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1905 |
| Case Model: | J Boss |
| Case Material: | Goldfilled |
| Gold Karat: | 14 |
| Guarantee: | 25 |
| Case Serial: | 5196276 |
| Added By: |  Rickglick1 |
2 Admirations
| Serial No.: | #385855 |
| Manufacturer: | Hamilton |
| Grade: | 990 |
| Size: | 16s |
| Model: | 1 |
| Jewels: | 21j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1907 |
| Case Model: | J Boss |
| Case Material: | Goldfilled |
| Gold Karat: | 14 |
| Guarantee: | 25 |
| Case Serial: | 5341974 |
| Added By: | fourleaf57 |
2 Admirations
| Serial No.: | #B236958 |
| Manufacturer: | Ball - Waltham |
| Grade: | Official Standard |
| Size: | 16s |
| Model: | 1899 |
| Jewels: | 17j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1909 |
| Case Model: | Ball Model/ J Boss |
| Case Material: | Goldfilled |
| Gold Karat: | 14 |
| Guarantee: | 25 |
| Case Serial: | 5407058 |
| Added By: | Rickglick1 |
1 Admiration
| Serial No.: | #1358470 |
| Manufacturer: | Hamilton |
| Grade: | 992 |
| Size: | 16s |
| Model: | 2 |
| Jewels: | 21j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1919 |
| Case Material: | Goldfilled |
| Gold Karat: | 14 |
| Guarantee: | 25 |
| Case Serial: | 5456529 |
| Added By: | cbfixesall |
2 Admirations
| Serial No.: | #10937954 |
| Manufacturer: | Waltham |
| Grade: | No. 620 |
| Size: | 16s |
| Model: | 1899 |
| Jewels: | 15j |
| Setting: | Pendant |
| Finish: | Nickel |
| Est. Date: | 1901 |
| Case Material: | Goldfilled |
| Gold Karat: | 14 |
| Guarantee: | 25 |
| Case Serial: | 5537222 |
| Added By: |  Elguapowho |
8 Admirations
| Serial No.: | #14187028 |
| Manufacturer: | Waltham |
| Grade: | No. 845 |
| Size: | 18s |
| Model: | 1892 |
| Jewels: | 21j |
| Setting: | Lever |
| Finish: | Nickel |
| Est. Date: | 1904 |
| Case Material: | Goldfilled |
| Gold Karat: | 14 |
| Guarantee: | 25 |
| Case Serial: | 5537960 |
| Added By: | kansasbeals |