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Keystone Watch Case Co.
Cyclone

Keystone Watch Case Co. Cyclone : Variant 1
Watch Case Marking for Keystone Watch Case Co. Cyclone: Case Guaranteed Cyclone [in Eye Shape] 10 Years [Keystone Logo]

Image Provided by Mobilaero


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.

Cyclone

An 1893 Keystone Watch Case Co. catalog describes the Cyclone case grade: "Such people are suited to a T in the Cyclone case - a good, serviceable, long-wearing case in the yellow metal, and yet at a price that puts it within the reach of all. It is made of an outside layer of solid sold soldered on a plate of composition metal, which has a heavy electro-plating of gold, by special process, on the inside."
Some original wholesale catalogs list the Cyclone case in the 10K Gold-Filled section despite being a rolled gold plate case, as described by the company.

Database ID:PWDB-15
Case Grade:Cyclone
Material:Rolled Gold Plate
Guarantee:10-Year
Introduced:January 1898
Discontinued:c.1903
Note:Some cases are simply marked with a "C" [Trademark #38526]. Some listed under the "Gold-Filled" category.
Trademark:35381
Trademark Issued:Nov 13, 1900
In Use Since:February 1890
Marking Variants:
(Not Intended to be Comprehensive)
Watch Case Marking Variant for Keystone Watch Case Co. Cyclone: Keystone Watch Case [Keystone Logo] C Case Guaranteed Cyclone 10 Years

Image Provided by fenrril
Original Papers:

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 Cyclone Cases For Sale on eBay See What Other Cyclone Cases Have Sold For on eBay
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Keystone Watch Case Co. Cyclone : Variant 2
Watch Case Marking for Keystone Watch Case Co. Cyclone: [Keystone Logo] C

Image Provided by winterwolf


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.

Cyclone

An 1893 Keystone Watch Case Co. catalog describes the Cyclone case grade: "Such people are suited to a T in the Cyclone case - a good, serviceable, long-wearing case in the yellow metal, and yet at a price that puts it within the reach of all. It is made of an outside layer of solid sold soldered on a plate of composition metal, which has a heavy electro-plating of gold, by special process, on the inside."

Database ID:PWDB-44
Case Grade:Cyclone
Material:Rolled Gold Plate
Guarantee:5-Years
Introduced:c.1890
Discontinued:c.1898
Note:Some cases are simply marked with a "C" [Trademark #38526]. "Not Guaranteed. Will Wear for Five Years." Some listed under the "Gold-Filled" category.
Trademark:35381
Trademark Issued:Nov 13, 1900
In Use Since:February 1890
Marking Variants:
(Not Intended to be Comprehensive)
Watch Case Marking Variant for Keystone Watch Case Co. Cyclone: C

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 Cyclone Cases For Sale on eBay See What Other Cyclone 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.

Elgin Grade 454 Pocket Watch Image Elgin Grade 454 Pocket Watch Image Elgin Grade 454 Pocket Watch Image Elgin Grade 454 Pocket Watch Image
4 Admirations
Admired Remove Admire
Serial No.: #24055716
Manufacturer:Elgin
Grade:454
Size:16s
Model:15
Jewels:21j
Setting:Lever
Finish:Nickel
Est. Date:1921
Case Model:Cyclone
Case Material:Goldfilled
Gold Karat:10
Guarantee:10
Case Serial:5199059
Added By:Gilberto Profile Image Gilberto
Elgin Grade 572 Pocket Watch Image Elgin Grade 572 Pocket Watch Image Elgin Grade 572 Pocket Watch Image Elgin Grade 572 Pocket Watch Image
4 Admirations
Admired Remove Admire
Serial No.: #U625657
Manufacturer:Elgin
Grade:572
Size:16s
Model:20
Jewels:19j
Setting:Lever
Finish:Nickel
Est. Date:1947
Case Model:CYCLONE
Case Material:Goldfilled
Guarantee:10
Case Serial:5483937
Added By:fenrril Profile Image fenrril