| Brand: | Sea-Gull, Tianjin | 
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|---|---|---|
| Family: |
Unknown
|
|
| Height: | 5.25 mm | |
| Jewels: | 20 | |
| Reserve: | 40 hours | |
| Frequency: | 21600 A/h | |
| Winding: | Automatic | |
| Diameter: | 26.00 mm ( ligne) | |
| Complications: | Regulator | |
| Hands: | Central Minute Hand, Hour Hand at 12:00, Small Seconds Hand at 6:00 | |
| Production: – Current | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Cal. ST17F (also called ST1711 and TY2708) is a regulator movement from Tianjin Seagull of China. It features a 12 hour subdial at 12:00, small seconds at 6:00, and central minute hand.