Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
Reference Documents
1979 Citizen Movement Table
Seiko Blue Book Automatic Movement Chronology
Seiko Laurel Brochure
Seiko List of Basic and Derivative Calibres
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Complications
Chronograph
-2-Button
-Cam Switching Chronograph
-Column Wheel Chronograph
–7-Column Chronograph
Date
-Big Date
–Double Wheel Big Date
-Quick Date Correction
-Semi-Instantaneous Date Change
Day
Hacking Seconds
Hand Winding
Hands
12 Hour Chronograph Hand at 6:00
30 Minute Chronograph Hand at 3:00
45 Minute Chronograph Hand at 3:00
Big Date at 6:00
Central 60 Second Chronograph Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Date Window at 6:00
Open Heart at 12:00
Small Seconds Hand at 9:00
Brand
ETA
STP
Venus
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
Hand winding
Regulators
ETACHRON
Screw Regulator
Swan Neck Regulator
Production Periods
1930s
1940s
1950s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
18000
28800
Anti-Shock
Incabloc Double-Cone
Jewels
17
20
25
26
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 11:00
Column Wheel
-Column Wheel at 5:00
ETA 2671
ETA 2678
ETA 2681
STP1-11
STP1-11M
STP3-13
STP5-15
STP5-15M
STP6-15
Venus 150
Venus 152
Venus 210
Venus 211
