12”’ | Hand Wind | Swiss Lever | Sweeping Seconds |

Remarks:

• Sweeping Seconds without hacking
• Variants of the ST5 movement family:
  • ST5-A: Hand winding, no date
  • ST5-B: Hand winding, with date
  • ST5-D: Automatic
  • ST5-K: Like ST5-A, but 21,600 instead of 18,000 bph

 

• Listing ID: 2560
• Manufacturer / Brand: Sea-Gull / Seagull
• Caliber: ST5, ST5-A
• Size: 12'''
• Shape: Round
• Winding: Manual (Crown)
• Hand Setting: Crown
• Seconds Hand: Sweeping seconds (central seconds)
• Escapement: Lever (Swiss, English, Glashütte)
• Date & Day: None
• Jewels: 19
• Setting Lever Screw/Pin Position: Right
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Similar to Incabloc
• Beats per hour: 18,000
• Balance Type: Unknown, probably Nickel
• Power Reserve: Approx. 44 hours
• Production Period: From 1966 (Automatic from 1971)
• Identification: Wheel train bridge labeled with ST5.
• External Link: https://uhrforum.de/threads/identifizierte-uhrwerke-die-weder-bei-ranfft-lorenz-noch-im-watch-wiki-zu-finden-sind.86322/page-35#post-4355435
• Country: China
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)