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Keystone Watch Case Co.
Keystone Watch Case Co.
Boss Scale 10K/20YR
Keystone Watch Case Co. Boss Scale 10K/20YR
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/20YR
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8 Admirations
Serial No.: | #B252950 |
Manufacturer: | Ball - Waltham |
Grade: | Official Standard |
Size: | 16s |
Model: | 1899 |
Jewels: | 21j |
Setting: | Lever |
Finish: | Nickel |
Est. Date: | 1911 |
Case Model: | Victory |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 4467302 |
Added By: | Rickglick1 |
5 Admirations
Serial No.: | #3354391 |
Manufacturer: | Illinois |
Grade: | 706 |
Size: | 16s |
Model: | 9 |
Jewels: | 17j |
Setting: | Lever |
Finish: | Nickel |
Est. Date: | 1918 |
Case Model: | Model 9 |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 4720887 |
Added By: | giddykippa |
4 Admirations
Serial No.: | #3504001 |
Manufacturer: | Seth Thomas |
Grade: | 28 |
Size: | 12s |
Model: | 23 |
Jewels: | 17j |
Setting: | Pendant |
Finish: | Nickel |
Est. Date: | 1912 |
Case Model: | Victory |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 5318571 |
Added By: | SethThomasFan |
3 Admirations
Serial No.: | #4108954 |
Manufacturer: | Illinois |
Grade: | Bunn Special |
Size: | 16s |
Model: | 11 |
Jewels: | 23j |
Setting: | Lever |
Finish: | Nickel |
Est. Date: | 1922 |
Case Model: | J. Boss |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 5389248 |
Added By: | cranemaker |
7 Admirations
Serial No.: | #21234111 |
Manufacturer: | Elgin |
Grade: | 454 |
Size: | 16s |
Model: | 15 |
Jewels: | 21j |
Setting: | Lever |
Finish: | Nickel |
Est. Date: | 1919 |
Case Model: | Boss Scale 10k/20yr |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 5397572 |
Added By: | tctimepieces |
3 Admirations
Serial No.: | #292371 |
Manufacturer: | Hampden |
Grade: | Springfield |
Size: | 18s |
Model: | 2 |
Jewels: | 7j |
Setting: | Lever |
Finish: | Gilt |
Est. Date: | 1883 |
Case Model: | JBOSS |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 5536331 |
Added By: | Wizardmaster |
2 Admirations
Serial No.: | #303767 |
Manufacturer: | Illinois |
Grade: | 61 |
Size: | 18s |
Model: | 2 |
Jewels: | 15j |
Setting: | Lever |
Finish: | Nickel |
Est. Date: | March 1889 - December 1889 |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 6098750 |
Added By: | Elguapowho |
2 Admirations
Serial No.: | #9006846 |
Manufacturer: | Elgin |
Grade: | 210 |
Size: | 16s |
Model: | 6 |
Jewels: | 7j |
Setting: | Pendant |
Finish: | Nickel |
Est. Date: | 1901 |
Case Model: | J.Boss |
Case Material: | Goldfilled |
Gold Karat: | 10 |
Guarantee: | 20 |
Case Serial: | 6674144 |
Added By: | Tahoward82 |