Pocket Watch Database

Keystone Watch Case Co. Boss Scale 10K/15YR
Watch Case Marking for Keystone Watch Case Co. Boss Scale 10K/15YR: [Scales]

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

Database ID:PWDB-37
Case Grade:Boss Scale 10K/15YR
Material:Gold-Filled
Gold Content:10K
Guarantee:15-Year
Introduced:July 1889
Discontinued:January 1898
Note:"Solid Gold Bows and Thumb Pieces" [1895SFM]. The 1895SFM catalog indicates the 6-Size is guranteed to only 10 years. However, this is likely an error since the 10K was guranteed for 15 years during this era.
Patents:#23820
Original Papers:

Image Provided by Jones & Horan


Catalog Sources: 1877DFC 1878CYC 1880GHR 1880JAB 1880NHW 1882SFM 1883GHR 1883UNK 1884LSS 1885OY 1886HMS 1886RA 1887BHIA 1887LAM 1888BA 1888OY 1889BAM 1889EVR 1890AP 1890BA 1890CHK 1890JC05 1890OY 1890SFM 1891RR 1891SAC 1892ACR 1892BAC 1892CPS 1892WES 1893BFNA 1893BHIA 1893MCE 1893SAC 1894BA 1894BATM 1894NRC 1895OY 1895SFM 1896MF 1896OY 1897BB 1898MLMF 1899ACB 1899BHIA 1899SAC 1900BA 1900BHIA 1900LMC 1900NHW 1901BAC 1901OY 1902ACB 1902BATM 1902BB 1902MF 1903ACB 1903BAC 1903FDW 1903N76 1903ON 1904ACB 1904BA 1904LB 1904PWC 1905ACB 1905BAC 1905DH 1905FNCS 1905ON 1906ON 1906SRC 1907ACB 1907JVF 1907NAC 1907NBC 1907OY 1907SFM 1908ACB 1909BAC 1910ACB 1911NG 1911OY 1911WJJ 1912COC 1912HA 1912NG 1912SFM 1912WJJ 1913FDW 1914ELD 1915ACB 1915ON 1915PWE 1916LCM 1917BA 1923CBN 1923ON 1925ASJ 1925CPS 1928ON 1932ON 1942WAG
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13 Admirations
Serial No.: #1169862
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 7
Size:12s
Model:1912
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1913
Case Model:J.Boss
Case Material:Goldfilled
Case Serial:8452166
Added By:CJEmpire3 Profile Image CJEmpire3
3 Admirations
Serial No.: #2622799
Manufacturer:Illinois
Grade:Bunn
Size:18s
Model:6
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1914
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:20
Case Serial:8553704
Added By:redjms Profile Image redjms
6 Admirations
Serial No.: #10536738
Manufacturer:Waltham
Grade:Vanguard
Size:16s
Model:1899
Jewels:23j
Setting:Lever
Finish:Nickel
Est. Date:1901
Case Model:J.BOSS
Case Material:Goldfilled
Gold Karat:10
Case Serial:8616732
Added By:Anpavl Profile Image Anpavl
2 Admirations
Serial No.: #30757016
Manufacturer:Waltham
Grade:Vanguard
Size:16s
Model:1908
Jewels:23j
Setting:Lever
Finish:Nickel
Est. Date:September 1941
Case Model:J.BOSS
Case Material:Goldfilled
Gold Karat:10
Case Serial:9151632
Added By:Steve3bs Profile Image Steve3bs
2 Admirations
Serial No.: #30846737
Manufacturer:Waltham
Grade:Vanguard
Size:16s
Model:1908
Jewels:23j
Setting:Lever
Finish:Nickel
Est. Date:January 1942
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9170000
Added By:todix144 Profile Image todix144
3 Admirations
Serial No.: #1181029
Manufacturer:Hamilton
Grade:992
Size:16s
Model:2
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1916
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9200481
Added By:todix144 Profile Image todix144
4 Admirations
Serial No.: #31246484
Manufacturer:Waltham
Grade:Vanguard
Size:16s
Model:1908
Jewels:23j
Setting:Lever
Finish:
Est. Date:January 1943
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9229257
Added By:thodge0001 Profile Image thodge0001
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 Profile Image GrizzlyBear
2 Admirations
Serial No.: #12886919
Manufacturer:Waltham
Grade:No. 625
Size:16s
Model:1899
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1903
Case Model:J.Boss
Guarantee:20
Case Serial:9287328
Added By:billreid Profile Image billreid
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 Profile Image ultimatekaiser
3 Admirations
Serial No.: #20063782
Manufacturer:Elgin
Grade:303
Size:12s
Model:3
Jewels:7j
Setting:Pendant
Finish:Nickel
Est. Date:1918
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9363053
Added By:Joef21 Profile Image Joef21
Serial No.: #3909378
Manufacturer:Illinois
Grade:Bunn Special
Size:16s
Model:9
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1921
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9377054
Added By:Dan4606 Profile Image Dan4606
4 Admirations
Serial No.: #32167325
Manufacturer:Waltham
Grade:Vanguard
Size:16s
Model:1908
Jewels:23j
Setting:Lever
Finish:Nickel
Est. Date:May 1945
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9397347
Added By:postie974 Profile Image postie974
2 Admirations
Serial No.: #945741
Manufacturer:Hamilton
Grade:926
Size:18s
Model:1
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1912
Case Model:J.Boss
Guarantee:20
Case Serial:9466765
Added By:Tobben Profile Image Tobben
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 Profile Image GrizzlyBear
11 Admirations
Serial No.: #2976241
Manufacturer:Illinois
Grade:806
Size:16s
Model:8
Jewels:21j
Setting:Lever
Finish:Two-Tone
Est. Date:1916
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9505574
Added By:CJEmpire3 Profile Image CJEmpire3
4 Admirations
Serial No.: #2313935
Manufacturer:Hamilton
Grade:992
Size:16s
Model:2
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1925
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9527493
Added By:StlSteve Profile Image StlSteve
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 Profile Image JeffProd47
7 Admirations
Serial No.: #2349762
Manufacturer:Hamilton
Grade:992
Size:16s
Model:2
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1925
Case Model:J.BOSS
Case Material:Goldfilled
Gold Karat:10
Case Serial:9588152
Added By:jrinconr Profile Image jrinconr
4 Admirations
Serial No.: #22325545
Manufacturer:Waltham
Grade:Vanguard
Size:16s
Model:1908
Jewels:23j
Setting:Lever
Finish:Gilt or Nickel
Est. Date:1918
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:10
Case Serial:9611734
Added By:thodge0001 Profile Image thodge0001