Pocket Watch Database

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]
Guaranteed
J.Boss 14K
25 Years

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

Database ID:PWDB-5
Case Grade:Boss Scale Crown 14K/25YR
Material:Gold-Filled
Gold Content:14K
Guarantee:25-Year
Introduced:January 1898
Note:Keystone added an additional five years to the guarantees starting January 1898, leading to the 14K/25YR grade. "Solid Gold Bow, Crown, Joints, and Thumb Piece" [1913FD]
Trademark:82993
Trademark Issued:Aug 8, 1911
In Use Since:c.1875
Patents:#23820
Marking Variants:
(Not Intended to be Comprehensive)
Original Papers:

Image Provided by The Keystone



Image Provided by The Keystone



Image Provided by The Keystone


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
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
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Note: All images are protected by copyright belonging to the uploader. Use without permission is prohibited.
Information provided by users may contain inaccuracies. Dials, cases, and hands displayed may not be original to the watch.

6 Admirations
Serial No.: #383342
Manufacturer:Hamilton
Grade:990
Size:16s
Model:1
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1907
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5063753
Added By:rjandladyj Profile Image rjandladyj
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 Profile Image rjandladyj
4 Admirations
Serial No.: #1414200
Manufacturer:Illinois
Grade:64
Size:18s
Model:5
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1898
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5084326
Added By:PGPOSTMAN Profile Image PGPOSTMAN
3 Admirations
Serial No.: #11231787
Manufacturer:Elgin
Grade:315
Size:12s
Model:3
Jewels:15j
Setting:Pendant
Finish:Nickel
Est. Date:1905
Case Model:J Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5104259
Added By:Gilberto Profile Image Gilberto
2 Admirations
Serial No.: #8717910
Manufacturer:Waltham
Grade:P.S. Bartlett
Size:18s
Model:1883
Jewels:17j
Setting:Pendant
Finish:Gilt
Est. Date:1898
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5130251
Added By:james9806 Profile Image james9806
5 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 Profile Image Rickglick1
3 Admirations
Serial No.: #16137
Manufacturer:Swiss Imports
Grade:Electa
Size:12s
Model:Electa
Jewels:15j
Setting:Pendant
Finish:Gilt
Est. Date:
Case Model:J Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5200683
Added By:czachw Profile Image czachw
Serial No.: #9269091
Manufacturer:Elgin
Grade:215
Size:18s
Model:5
Jewels:7j
Setting:Pendant
Finish:Gilt
Est. Date:1901
Case Model:J. Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5209036
Added By:countessj Profile Image countessj
44 Admirations
Serial No.: #1612243
Manufacturer:Illinois
Grade:Bunn Special
Size:18s
Model:6
Jewels:24j
Setting:Lever
Finish:Nickel
Est. Date:1902
Case Model:J. Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5248831
Added By:Mobilaero Profile Image Mobilaero
6 Admirations
Serial No.: #517206
Manufacturer:Rockford
Grade:910
Size:18s
Model:9
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1898
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5280744
Added By:Britjack Profile Image Britjack
8 Admirations
Serial No.: #962991
Manufacturer:Hamilton
Grade:940
Size:18s
Model:1
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1912
Case Model:Boss Scale Crown 14K/25YR
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5281067
Added By:tctimepieces Profile Image tctimepieces
13 Admirations
Serial No.: #13670871
Manufacturer:Elgin
Grade:240
Size:18s
Model:8
Jewels:19j
Setting:Lever
Finish:Nickel
Est. Date:1909
Case Model:J. Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5324399
Added By:Mobilaero Profile Image Mobilaero
2 Admirations
Serial No.: #734499
Manufacturer:Hamilton
Grade:975
Size:16s
Model:1
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1909
Case Model:J Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5325504
Added By:Rickglick1 Profile Image 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 Profile Image fourleaf57
4 Admirations
Serial No.: #1205394
Manufacturer:Hampden
Grade:Special Railway
Size:18s
Model:3
Jewels:23j
Setting:Lever
Finish:Two-Tone
Est. Date:1898
Case Model:J.Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5378654
Added By:redjms Profile Image redjms
2 Admirations
Serial No.: #24464705
Manufacturer:Elgin
Grade:454
Size:16s
Model:15
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1922
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5392865
Added By:TWW369 Profile Image TWW369
3 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 Profile Image Rickglick1
4 Admirations
Serial No.: #13482667
Manufacturer:Elgin
Grade:360
Size:16s
Model:13
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1908
Case Model:J Boss
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5426908
Added By:Rlegg6 Profile Image Rlegg6
7 Admirations
Serial No.: #1395476
Manufacturer:Hamilton
Grade:992
Size:16s
Model:2
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1920
Case Model:Boss Scale Crown 14k/25yr
Case Material:Goldfilled
Gold Karat:14
Guarantee:25
Case Serial:5442112
Added By:tctimepieces Profile Image tctimepieces
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 Profile Image cbfixesall