Rotherham 20''' (18 size)
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20”’ | Hand Wind | English Lever | Small Seconds |
Remarks:
- Rotherham = John Rotherham & Son Ltd., Warwickshire, England
- Rocking bar winding
- Click on the dial side
- Listing ID: 3262
- Manufacturer / Brand: Rotherham
- Caliber: 20''' (18 size)
- Size in French Lignes: 20''' (18 size)
- Size range mm largest diameter: > 40 mm
- Shape: Round
- Winding: Manual (Crown)
- Hands Setting: Crown with pin/pusher
- Seconds Hand: Small seconds
- Escapement: Lever (Swiss, English, Glashütte)
- Date, Day, Month...: None
- Jewels: 15
- Balance Position: Left (240 - 360°)
- Shock Protection: None
- Beats per hour: 18,000
- Balance Type: Bimetallic screw balance
- Power Reserve: Unknown
- Production Period: From the end of the 1880s until around 1930 (source: https://oxfordpocketwatches.blogspot.com/2017/02/rotherham-three-quarter-plate-keyless.html)
- Identification: Rotherham logo (snake on trident in star) on the dial side.
- External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-27#post-3672346
- External Link 2: https://oxfordpocketwatches.blogspot.com/2017/02/rotherham-three-quarter-plate-keyless.html
- Country: United Kingdom
- Contributor ©: Uhrforum.de member Badener (Andreas Kelz)
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