Pocket Watch Database

Keystone Watch Case Co. Keystone Coin Silver
Watch Case Marking for Keystone Watch Case Co. Keystone Coin Silver: Keystone
Coin
C [in Keystone Block]

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.

Keystone Coin Silver

Database ID:PWDB-97
Case Grade:Keystone Coin Silver
Material:Coin Silver
Note:1883UNK: "Made by C.N. Thorpe & Co., Philadelphia, Pa.
Marking Variants:
(Not Intended to be Comprehensive)
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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2 Admirations
Serial No.: #5747900
Manufacturer:Waltham
Grade:Crescent St.
Size:18s
Model:1883
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:March 1892 - November 1893
Case Material:Coinsilver
Case Serial:1954621
Added By:wepouaout Profile Image wepouaout
2 Admirations
Serial No.: #3916675
Manufacturer:Elgin
Grade:2
Size:16s
Model:3
Jewels:13j or 15j
Setting:Lever
Finish:Gilt
Est. Date:1890
Case Model:Leader Coin
Case Material:Coinsilver
Case Serial:1955749
Added By:MrKeith Profile Image MrKeith
2 Admirations
Serial No.: #22474259
Manufacturer:Waltham
Grade:No. 315
Size:3/0s
Model:1900
Jewels:15j
Setting:Unknown
Finish:Nickel
Est. Date:1918
Case Material:Silver
Case Serial:3082890
Added By:twinspark Profile Image twinspark
Serial No.: #1005543
Manufacturer:Elgin
Grade:7
Size:18s
Model:1
Jewels:7j
Setting:Key
Finish:Gilt
Est. Date:1883
Case Model:98593
Case Material:Coinsilver
Case Serial:3598593
Added By:RuffDayz Profile Image RuffDayz
8 Admirations
Serial No.: #214383
Manufacturer:Hampden
Grade:Lafayette
Size:18s
Model:2
Jewels:15j
Setting:Lever
Finish:Nickel
Est. Date:1881
Case Model:Leader
Case Material:Coinsilver
Case Serial:4004565
Added By:redjms Profile Image redjms
3 Admirations
Serial No.: #1272691
Manufacturer:Illinois
Grade:110
Size:16s
Model:1
Jewels:7j
Setting:Lever
Finish:Gilt
Est. Date:1895
Case Material:Coinsilver
Case Serial:4020352
Added By:oilseed Profile Image oilseed
18 Admirations
Serial No.: #861400
Manufacturer:Hampden
Grade:New Railway
Size:18s
Model:2
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1894
Case Material:Coinsilver
Case Serial:4028275
Added By:Mobilaero Profile Image Mobilaero
4 Admirations
Serial No.: #3377960
Manufacturer:Elgin
Grade:108
Size:16s
Model:5
Jewels:15j
Setting:Pendant
Finish:Nickel
Est. Date:1889
Case Model:Leader
Case Material:Coinsilver
Case Serial: 4034533
Added By:Rickhufnagel7 Profile Image Rickhufnagel7
2 Admirations
Serial No.: #15958165
Manufacturer:Waltham
Grade:No. 81
Size:18s
Model:1883
Jewels:15j
Setting:Lever
Finish:Gilt
Est. Date:1907
Case Material:Coinsilver
Case Serial:4041278
Added By:winterwolf Profile Image winterwolf
3 Admirations
Serial No.: #15291625
Manufacturer:Elgin
Grade:372
Size:16s
Model:15
Jewels:19j
Setting:Lever
Finish:Nickel
Est. Date:1911
Case Material:Coinsilver
Case Serial:4041504
Added By:Urbanops Profile Image Urbanops
5 Admirations
Serial No.: #8035961
Manufacturer:Elgin
Grade:210
Size:16s
Model:6
Jewels:7j
Setting:Pendant
Finish:Nickel
Est. Date:1900
Case Material:Coinsilver
Case Serial:4044125
Added By:WillyB58 Profile Image WillyB58
2 Admirations
Serial No.: #75928
Manufacturer:Lancaster Watch Co.
Grade:West End
Size:18s
Model:2
Jewels:?
Setting:Lever
Finish:Gilt
Est. Date:1882
Case Model:Open Face
Case Material:Coinsilver
Case Serial:4048404
Added By:cjbrem Profile Image cjbrem
2 Admirations
Serial No.: #1331832
Manufacturer:Hampden
Grade:No. 64
Size:18s
Model:3
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1899
Case Model:Round
Case Material:Silver
Case Serial:4119187
Added By:rbivgq1734 Profile Image rbivgq1734
3 Admirations
Serial No.: #10808276
Manufacturer:Elgin
Grade:144
Size:18s
Model:3
Jewels:17j
Setting:Lever
Finish:Nickel
Est. Date:1904
Case Material:Silver
Case Serial:4186307
Added By:swhite1750 Profile Image swhite1750
Serial No.: #12016620
Manufacturer:Waltham
Grade:Lady Waltham
Size:0s
Model:1900
Jewels:16j
Setting:Pendant
Finish:Nickel
Est. Date:1902
Case Model:Sterling
Case Material:Silver
Case Serial:4186677
Added By:1whatever Profile Image 1whatever
0 Admirations
Serial No.: #12880662
Manufacturer:Elgin
Grade:293
Size:16s
Model:7
Jewels:7j
Setting:Pendant
Finish:Gilt
Est. Date:1907
Case Material:Silver
Case Serial:4233258
Added By:avantmae Profile Image avantmae
3 Admirations
Serial No.: #13869825
Manufacturer:Elgin
Grade:317
Size:18s
Model:5
Jewels:15j
Setting:Pendant
Finish:Nickel
Est. Date:1909
Case Material:Silver
Case Serial:4428488
Added By:PhilipPoland Profile Image PhilipPoland
2 Admirations
Serial No.: #15950014
Manufacturer:Elgin
Grade:292
Size:16s
Model:6
Jewels:7j
Setting:Pendant
Finish:Gilt
Est. Date:1911
Case Material:Silver
Case Serial:4455151
Added By:evanpg Profile Image evanpg
2 Admirations
Serial No.: #28732551
Manufacturer:Waltham
Grade:No. 617
Size:6/0s
Model:1898
Jewels:17j
Setting:Pendant
Finish:Nickel
Est. Date:1935
Case Material:Silver
Case Serial:4673380
Added By:mrkruk76 Profile Image mrkruk76
2 Admirations
Serial No.: #26431082
Manufacturer:Elgin
Grade:463
Size:3/0s
Model:3
Jewels:7j
Setting:Pendant
Finish:Nickel
Est. Date:1924
Case Material:Silver
Case Serial:4679691
Added By:Grizzy Profile Image Grizzy