Pocket Watch Database

Keystone Watch Case Co. 14K : Variant 1
Watch Case Marking for Keystone Watch Case Co. 14K: Guaranteed
14K
.585 Fine
The K.W.C.Co.

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.

14K

Database ID:PWDB-118
Case Grade:14K
Material:Gold
Gold Content:14K
Note:18s Approximately 45-55 dwt. (OF 25-30 dwt.)16s Approximately 36-45 dwt. (OF 35 dwt.). 6s Approximately 18-19 dwt. 0s Approximately 13 dwt.
Marking Variants:
(Not Intended to be Comprehensive)
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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Keystone Watch Case Co. Waltham Colonial 14K : Variant 2
Watch Case Marking for Keystone Watch Case Co. Waltham Colonial 14K: Keystone
14K
[Keystone Block]
Waltham
Colonial

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.

Waltham Colonial 14K

Database ID:PWDB-647
Case Grade:Waltham Colonial 14K
Material:Gold
Gold Content:14K
Find Waltham Colonial 14K Cases For Sale on eBay See What Other Waltham Colonial 14K 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.

0 Admirations
Serial No.: #248668
Manufacturer:Hamilton
Grade:940
Size:18s
Model:1
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1903
Case Material:Gold
Gold Karat:14
Case Serial:4812303
Added By:lgpetra Profile Image lgpetra
0 Admirations
Serial No.: #15862537
Manufacturer:Elgin
Grade:344
Size:12s
Model:2
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1911
Case Material:Gold
Gold Karat:14
Case Serial:4812684
Added By:TommieOlofsson Profile Image TommieOlofsson
5 Admirations
Serial No.: #80512
Manufacturer:Hamilton
Grade:970
Size:16s
Model:1
Jewels:21j
Setting:Pendant
Finish:Nickel
Est. Date:1902
Case Material:Gold
Gold Karat:14
Case Serial:4816676
Added By:DonnieT Profile Image DonnieT
7 Admirations
Serial No.: #388268
Manufacturer:Hamilton
Grade:990
Size:16s
Model:1
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1907
Case Material:Gold
Gold Karat:14
Case Serial:4816681
Added By:Bulldog1964 Profile Image Bulldog1964
Serial No.: #12274695
Manufacturer:Elgin
Grade:320
Size:0s
Model:2
Jewels:7j
Setting:Pendant
Finish:Nickel
Est. Date:1906
Case Material:Gold
Gold Karat:14
Case Serial:4864266
Added By:countessj Profile Image countessj
4 Admirations
Serial No.: #10037548
Manufacturer:Waltham
Grade:Maximus
Size:16s
Model:1899
Jewels:21j
Setting:Pendant
Finish:Nickel
Est. Date:1900
Case Material:Gold
Gold Karat:14
Case Serial:4882339
Added By:Fullboat Profile Image Fullboat
0 Admirations
Serial No.: #2038417
Manufacturer:Illinois
Grade:35
Size:0s
Model:2
Jewels:15j
Setting:Pendant
Finish:Nickel
Est. Date:1908
Case Material:Gold
Gold Karat:14
Case Serial:4893970
Added By:jlueth Profile Image jlueth
0 Admirations
Serial No.: #12058617
Manufacturer:Waltham
Grade:Maximus
Size:16s
Model:1899
Jewels:23j
Setting:Pendant
Finish:
Est. Date:1902
Case Material:Gold
Gold Karat:14
Case Serial:4918024
Added By:Elliot Profile Image Elliot
2 Admirations
Serial No.: #1901738
Manufacturer:Illinois
Grade:273
Size:12s
Model:1
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1907
Case Material:Gold
Gold Karat:14
Case Serial:4939019
Added By:cliffdobbins Profile Image cliffdobbins
4 Admirations
Serial No.: #12595199
Manufacturer:Elgin
Grade:339
Size:16s
Model:6
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1907
Case Material:Gold
Gold Karat:14
Case Serial:4955687
Added By:sgbender Profile Image sgbender
Serial No.: #14816132
Manufacturer:Elgin
Grade:263
Size:0s
Model:2
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1910
Case Material:Gold
Gold Karat:14
Case Serial:4961240
Added By:tturner770 Profile Image tturner770
0 Admirations
Serial No.: #7437630
Manufacturer:Elgin
Grade:162
Size:16s
Model:7
Jewels:21j
Setting:Pendant
Finish:Nickel
Est. Date:1898
Case Material:Gold
Gold Karat:14
Case Serial:4968063
Added By:EdwinOG Profile Image EdwinOG
4 Admirations
Serial No.: #10062319
Manufacturer:Elgin
Grade:269
Size:6/0s
Model:2
Jewels:7j
Setting:Pendant
Finish:Nickel
Est. Date:1904
Case Material:Gold
Gold Karat:14
Case Serial:5018294
Added By:PhillyBass Profile Image PhillyBass
4 Admirations
Serial No.: #17715361
Manufacturer:Elgin
Grade:189
Size:12s
Model:2
Jewels:19j
Setting:Pendant
Finish:Nickel
Est. Date:1914
Case Model:2
Case Material:Gold
Gold Karat:14
Case Serial:5020057
Added By:annhall Profile Image annhall
4 Admirations
Serial No.: #15261930
Manufacturer:Elgin
Grade:354
Size:0s
Model:2
Jewels:15j
Setting:Pendant
Finish:Nickel
Est. Date:1911
Case Material:Gold
Gold Karat:14
Case Serial:5050505
Added By:sgbender Profile Image sgbender
3 Admirations
Serial No.: #16243709
Manufacturer:Waltham
Grade:No. 165
Size:0s
Model:1907
Jewels:15j
Setting:Pendant
Finish:Nickel
Est. Date:1907
Case Material:Gold
Gold Karat:14
Case Serial:5066665
Added By:barryb Profile Image barryb
2 Admirations
Serial No.: #15675782
Manufacturer:Waltham
Grade:No. 625
Size:16s
Model:1899
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1907
Case Material:Gold
Gold Karat:14
Case Serial:5121186
Added By:daveesh Profile Image daveesh
2 Admirations
Serial No.: #916369
Manufacturer:Hamilton
Grade:927
Size:18s
Model:2
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1911
Case Material:Gold
Gold Karat:14
Case Serial:5156968
Added By:watchrepairman Profile Image watchrepairman
Serial No.: #16455510
Manufacturer:Waltham
Grade:No. 100
Size:0s
Model:1900
Jewels:7j
Setting:Pendant
Finish:Nickel
Est. Date:1908
Case Material:Gold
Gold Karat:14
Case Serial:5159534
Added By:WatchJeff Profile Image WatchJeff
2 Admirations
Serial No.: #9168820
Manufacturer:Waltham
Grade:Seaside
Size:0s
Model:1891
Jewels:15j
Setting:Pendant
Finish:Gilt
Est. Date:1899
Case Material:Gold
Gold Karat:14
Case Serial:5168900
Added By:konradwusa Profile Image konradwusa