Rockford Grade 190 Winona
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0 Size (13”’) | Hand Wind | Swiss Lever | Small Seconds |
Remarks:
- Savonnette (hunter) movement
- Swan-neck fine regulator
- Screwed-in settings (Chatons)
- Negative winding
- Jewels: Sapphires (white) for the balance, rubies (red) for the rest
- Listing ID: 4571
- Manufacturer / Brand: Rockford
- Caliber: Grade 190 Winona
- Size in French Lignes: 0 Size (approx. 13''')
- Size range mm largest diameter: 22 - 31 mm
- Shape: Round
- Winding: Manual (Crown)
- Hands Setting: Crown
- Seconds Hand: Small seconds
- Escapement: Lever (Swiss, English, Glashütte)
- Date, Day, Month...: None
- Jewels: 15
- Setting Lever Screw/Pin Position: None (Negative Winding)
- Balance Position: Bottom (120 - 240°)
- Shock Protection: None
- Beats per hour: 18,000
- Balance Type: Bimetallic screw balance with Breguet hairspring
- Power Reserve: Unknown
- Production Period: Probably around 1910, based on the serial number
- Identification: Marked with Rockford Watch Co. and Winona. Information based on serial number: https://pocketwatchdatabase.com/search/result/rockford/816511
- External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-9#post-2071394
- External Link 2: https://pocketwatchdatabase.com/search/result/rockford/816511
- Country: U. S. A.
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
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