20”’ | Hand Wind | Swiss Lever | Stopwatch |

Remarks:

• Stopwatch with column wheel, 30 s, 15 min counter
• Different caliber designations (2 vs. R 815) in different movement identifiers
• Stopwatch mechanism on dial side
• Pillar construction
• Movement marked with Swiss patent number 3364
• Movement family:
  • Excelsior Park 2 / R 815: distance between hands 8.15 mm
  • Excelsior Park 20 / R 990: distance between hands 9.90 mm
  • Excelsior Park 22: distance between hands 8.15 mm, rattrapante (split-seconds)
  • Excelsior Park 222: distance between hands 9.90 mm, rattrapante (split-seconds)

• Listing ID: 17459
• Manufacturer / Brand: Excelsior Park
• Caliber: 2 / R 815
• Size in French Lignes: 20'''
• Size range mm largest diameter: > 40 mm
• Shape: Round
• Winding: Manual (Crown)
• Hands Setting: None (stopwatch)
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: None
• Other Functions: Stopwatch
• Jewels: 7
• Balance Position: Bottom (120 - 240°)
• Shock Protection: None
• Beats per hour: 36,000
• Balance Type: Nickel
• Power Reserve: Unknown
• Production Period: Unknown, probably around 1939. However, the Swiss patent CH3364 dates back to 1891
• Country: Switzerland
• Identification: Listed in the Classification Horlogère of 1939 as caliber R 815, in the "Official Catalogue of genuine Swiss Watch repair parts" from 1949 as caliber 2.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)