Pocket Watch Database
Keystone Watch Case Co.
Cyclone
![Watch Case Marking for Keystone Watch Case Co. Cyclone: Case Guaranteed
Cyclone [in Eye Shape]
10 Years
[Keystone Logo]](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Cyclone-10YR.jpg)
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.
![Watch Case Marking Variant for Keystone Watch Case Co. Cyclone: Keystone
Watch Case
[Keystone Logo]
C
Case
Guaranteed
Cyclone
10 Years](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Cyclone-10YR-VSerial.jpg)
Image Provided by The Keystone
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."
Find Cyclone Cases For Sale on eBay See What Other Cyclone Cases Have Sold For on eBay![Watch Case Marking Variant for Keystone Watch Case Co. Cyclone: [Keystone Logo]
C](https://pocketwatchdatabase.com/assets/images/cases/Keystone-Cyclone-C.jpg)
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Information provided by users may contain inaccuracies. Dials, cases, and hands displayed may not be original to the watch.
| Serial No.: | #1170540 |
| Manufacturer: | Illinois |
| Grade: | 60 |
| Size: | 18s |
| Model: | 4 |
| Jewels: | 15j |
| Setting: | Pendant |
| Finish: | Gilt |
| Est. Date: | 1893 |
| Case Model: | Cyclone |
| Added By: |  winterwolf |
| Serial No.: | #213027 |
| Manufacturer: | Aurora Watch Co. |
| Grade: | |
| Size: | 18s |
| Model: | 3 |
| Jewels: | 7j |
| Setting: | Pendant |
| Finish: | Gilt |
| Est. Date: | 1889 |
| Case Model: | Cyclone |
| Case Material: | Goldfilled |
| Guarantee: | 5 |
| Case Serial: | 2037853 |
| Added By: |  HerbertTrw |
| Serial No.: | #12404424 |
| Manufacturer: | Elgin |
| Grade: | 289 |
| Size: | 6s |
| Model: | 2 |
| Jewels: | 7j |
| Setting: | Pendant |
| Finish: | Gilt |
| Est. Date: | 1906 |
| Case Model: | Cyclone |
| Case Material: | Goldfilled |
| Case Serial: | 4363154 |
| Added By: |  Scottydoesntknow |
| Serial No.: | #12213275 |
| Manufacturer: | Elgin |
| Grade: | 292 |
| Size: | 16s |
| Model: | 6 |
| Jewels: | 7j |
| Setting: | Pendant |
| Finish: | Gilt |
| Est. Date: | 1906 |
| Case Model: | Cyclone |
| Case Material: | Goldfilled |
| Guarantee: | 10 |
| Case Serial: | 4462615 |
| Added By: | HerbertTrw |
| Serial No.: | #25991946 |
| Manufacturer: | Waltham |
| Grade: | No. 610 |
| Size: | 16s |
| Model: | 1908 |
| Jewels: | 7j |
| Setting: | Pendant |
| Finish: | Nickel |
| Est. Date: | 1926 |
| Case Model: | Cyclone |
| Guarantee: | 10 |
| Case Serial: | 4572079 |
| Added By: |  QMcLaughlan |
