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You are here: Home / Families / Tianjin TY2700/ST17 Family

Tianjin TY2700/ST17 Family

Last Update: June 28, 2019

BRANDS: Sea-Gull, Tianjin

Production:  – 
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s
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The Tianjin Watch Company makes a family of watches known as TY2700 or ST17. Most are automatic, apart from the TY2705/ST1700, and most have small seconds at 6:00.

ComplicationsJewelsDiameterHeight
TY2705
ST1700
Hand-winding
Small seconds at 6:00
1726.003.22
TY2706
ST1701
Small seconds at 6:002026.004.65
TY2707
ST1741
Small seconds at 6:00
Big date at 12:00
2029.005.95
TY2708
ST1711
ST17F
Central minutes
Small seconds at 6:00
Hour hand at 12:00
2026.005.25
ST17F2Small seconds at 6:00
Minute hand at 9:00
Hour hand at 12:00
2026.005.25
TY2709
ST1721
Central minutes
Small seconds at 6:00
Jumping hours at 12:00
2026.005.70
TY2711
ST1791
Central retrograde date
Week pointer at 6:00
Small seconds at 6:00
2026.006.50
TY2712
ST1742
24 hour hand at 2:00
Date at 4:30
Small seconds at 8:00
Hour and minute at 10:00
2529.306.73
TY2712(MS)
ST1744
Day/night at 2:00
Date at 4:30
Small seconds at 8:00
Hour and minute at 10:00
2529.306.73
TY2714
ST1780
Date pointer at 2:00
Small seconds at 6:00
Power reserve at 10:30
2828.006.44
TY2715
ST1792
Central retrograde date
Month pointer at 4:30
Year at 6:00
Day pointer at 7:30
2028.006.50
TY2718
ST1731
Date at 3:00
Small seconds at 6:00
2026.005.12
TY2721
ST1770
Skeletonized
Hand-winding
Small seconds at 6:00
1726.003.22
TY2723
ST1771
Skeletonized
Small seconds at 6:00
2026.004.65

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Calibre Start Year End Year Jewels Diameter (mm) Height (mm) Complications
ST17F2 Current 20 26.00 5.25 24 Hour Hand, Regulator

ST17F2

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