12 1/2”’ | Automatic | Swiss Lever | Small Seconds | Pointer Date | Power Reserve Indicator |

Remarks:

• Automatik with Magic Lever, bidirectional winding
• Small seconds without hacking at 6 H
• Pointer date with small hand at 2 H (correction by pusher at 1 H)
• Power reserve indicator with small hand at 10:30 H
• The Sea-Gull ST17 caliber is a derivative of the ST16
  Differences:
  • Seconds hacking only on the ST16
  • In the ST17, the fourth wheel is located at 6 H in order to be able to realize a small second; in the ST16, the escape wheel is located there
• The ST1780 is part of a very large family of movements:
  • ST1700: manual winding, central hour, central minute, small seconds at 6 H
  • ST1701: Automatic, central hour, central minute, small seconds at 6 H
  • ST1711: Automatic, hour display with small hand at 12 H, central minute, small seconds
  • ST1718: Automatic, central hour, central minute, small seconds at 6 H, Pointer date with small hand at 2 H, Power reserve indicator with small hand at 10:30 H
  • ST1721: Automatic, jumping hour at 12 H, central minute, small seconds
  • ST1731: Automatic, central hour, central minute, small seconds at 6 H, date
  • ST1741: Automatic, central hour, central minute, small seconds at 6 H, large date
  • ST1780: Automatic, central hour, central minute, small seconds at 6 H, date display with small hand, power reserve indicator

• Listing ID: 4059
• Manufacturer / Brand: Sea-Gull / Seagull
• Caliber: ST1780 / TY2714
• Size in French Lignes: 12 1/2'''
• Size range mm largest diameter: 22 - 31 mm
• Shape: Round
• Winding: Automatic
• Hands Setting: Crown
• Seconds Hand: Small seconds
• Escapement: Lever (Swiss, English, Glashütte)
• Date, Day, Month...: Date
• Other Functions: Power Reserver Indicator
• Jewels: 28
• Setting Lever Screw/Pin Position: Left
• Balance Position: Bottom (120 - 240°)
• Shock Protection: Similar to Incabloc
• Beats per hour: 21,600
• Balance Type: Glucydur
• Power Reserve: 42 hours
• Production Period: Unknown, probably around 2013
• Country: China
• Identification: Information from the seller of the watch. Listed in a Sea-Gull catalog from 2013.
• Contributor ©: Uhrforum.de member Badener (Andreas Kelz)