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.: #13552601
Manufacturer:Waltham
Grade:No. 610
Size:16s
Model:1899
Jewels:7j
Setting:Pendant
Finish:
Est. Date:1904
Case Material:Gold
Gold Karat:14
Case Serial:123247
Added By:JohnnySixgun Profile Image JohnnySixgun
3 Admirations
Serial No.: #14093512
Manufacturer:Waltham
Grade:Vanguard
Size:16s
Model:1899
Jewels:23j
Setting:Pendant
Finish:Nickel
Est. Date:1904
Case Material:Gold
Gold Karat:14
Case Serial:123558
Added By:winterwolf Profile Image winterwolf
8 Admirations
Serial No.: #1135384
Manufacturer:E. Howard & Co.
Grade:No. 7
Size:12s
Model:1908
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1857-1861
Case Material:Gold
Gold Karat:14
Case Serial:130491
Added By:Rickybe Profile Image Rickybe
3 Admirations
Serial No.: #1106644
Manufacturer:E. Howard & Co.
Grade:
Size:12s
Model:'
Jewels:21j
Setting:
Finish:Nickel
Est. Date:1857-1861
Case Material:Gold
Gold Karat:14
Case Serial:137870
Added By:bledo2009 Profile Image bledo2009
9 Admirations
Serial No.: #1150059
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 10
Size:16s
Model:1907
Jewels:21j
Setting:Pendant
Finish:Nickel
Est. Date:1910
Case Material:Gold
Gold Karat:14
Case Serial:145906
Added By:Blicquer Profile Image Blicquer
4 Admirations
Serial No.: #1206779
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 7
Size:12s
Model:1912
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1913
Case Material:Gold
Gold Karat:14
Case Serial:149276
Added By:JenZo82 Profile Image JenZo82
2 Admirations
Serial No.: #1217018
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 6
Size:12s
Model:1912
Jewels:19j
Setting:Pendant
Finish:Nickel
Est. Date:1913
Case Material:Gold
Gold Karat:14
Case Serial:150000
Added By:DisprBJR Profile Image DisprBJR
2 Admirations
Serial No.: #968756
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 4
Size:16s
Model:1905
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1908
Case Model:420
Case Material:Gold
Gold Karat:14
Case Serial:159627
Added By:chaff1 Profile Image chaff1
Serial No.: #1245468
Manufacturer:E. Howard & Co.
Grade:
Size:12s
Model:
Jewels:23j
Setting:
Finish:
Est. Date:1857-1861
Case Material:Gold
Gold Karat:14
Case Serial:163922
Added By:danielh13565 Profile Image danielh13565
6 Admirations
Serial No.: #1237203
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 0
Size:16s
Model:1907
Jewels:23j
Setting:Pin/Lever
Finish:Nickel
Est. Date:1913
Case Material:Gold
Gold Karat:14
Case Serial:170301
Added By:Mebol1972 Profile Image Mebol1972
3 Admirations
Serial No.: #962605
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 9
Size:16s
Model:1905
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1908
Case Material:Gold
Gold Karat:14
Case Serial:178612
Added By:elk1989 Profile Image elk1989
3 Admirations
Serial No.: #1086108
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 0
Size:16s
Model:1907
Jewels:23j
Setting:Lever
Finish:Nickel
Est. Date:1910
Case Material:Gold
Gold Karat:14
Case Serial:186014
Added By:strikeph Profile Image strikeph
6 Admirations
Serial No.: #1230552
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 8
Size:12s
Model:1912
Jewels:23j
Setting:Pendant
Finish:Nickel
Est. Date:1913
Case Material:Gold
Gold Karat:14
Case Serial:188934
Added By:chn006 Profile Image chn006
Serial No.: #2797353
Manufacturer:Elgin
Grade:94
Size:6s
Model:1
Jewels:11j
Setting:Lever
Finish:Gilt
Est. Date:1888
Case Material:Gold
Gold Karat:14
Case Serial:189989
Added By:JDPorter81 Profile Image JDPorter81
4 Admirations
Serial No.: #974058
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 4
Size:16s
Model:1905
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1908
Case Material:Gold
Gold Karat:14
Case Serial:200017
Added By:DAYule Profile Image DAYule
2 Admirations
Serial No.: #1086675
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 0
Size:16s
Model:1907
Jewels:23j
Setting:Lever
Finish:Nickel
Est. Date:1910
Case Material:Gold
Gold Karat:14
Case Serial:200498
Added By:Schmidty Profile Image Schmidty
6 Admirations
Serial No.: #226494
Manufacturer:E. Howard & Co.
Grade:Horse
Size:18s
Model:Series VII
Jewels:15j
Setting:Pendant
Finish:Nickel
Est. Date:August 15, 1893 - October 13, 1894
Case Model:Box hindge
Case Material:Gold
Gold Karat:14
Case Serial:0210708
Added By:Joerealtor Profile Image Joerealtor
2 Admirations
Serial No.: #25144
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 12
Size:10s
Model:1921
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1921
Case Material:Gold
Gold Karat:14
Case Serial:219725
Added By:Silvercloud3 Profile Image Silvercloud3
3 Admirations
Serial No.: #29022
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 12
Size:10s
Model:1921
Jewels:17j
Setting:Pendant
Finish:Gilt
Est. Date:1921
Case Material:Gold
Gold Karat:14
Case Serial:229362
Added By:dannyallen99 Profile Image dannyallen99
3 Admirations
Serial No.: #49315
Manufacturer:E. Howard Watch Co. (Keystone)
Grade:Series 12
Size:10s
Model:1921
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1928
Case Material:Gold
Gold Karat:14
Case Serial:241383
Added By:mikegoldnj Profile Image mikegoldnj