Grail Watch Reference
A Reference Library for Watches from Grail Watch
Movement Database
Grail Watch Blog
The Watch Files Podcast
Reference Documents
1979 Citizen Movement Table
Seiko Blue Book Automatic Movement Chronology
Seiko Laurel Brochure
Seiko List of Basic and Derivative Calibres
About Grail Watch
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Complications
-Semi-Instantaneous Date Change
Hands
12 Hour Chronograph Hand at 6:00
12 Hour Chronograph Hand at 9:00
30 Minute Chronograph Hand at 3:00
30 Minute Chronograph Hand at 9:00
Central 24 Hour Hand
Central 60 Second Chronograph Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Central World Time Disc
City Window at 3:00
Date Window at 3:00
Date Window at 4:30
Power Reserve Pointer at 7:00
Small Seconds Hand at 3:00
Small Seconds Hand at 6:00
Small Seconds Hand at 9:00
Brand
ETA
-Valjoux
Soprod
Vaucher Manufacture
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
Screw Regulator
Variable Inertia Blocks
Production Periods
1970s
1980s
1990s
2000s
2010s
2020s
Frequency
28,800 A/h
36,000 A/h
Anti-Shock
Incabloc Double-Cone
Novodiac
Jewels
17
21
23
25
27
37
42
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 11:00
-Balance at 12:00
-Balance at 6:00
ETA 2671
ETA 2678
ETA 2681
ETA 2804-2
ETA 2824-2
ETA 2892A2
ETA 2893-1
ETA 2893-2
ETA 2894-2
ETA 2895-2
ETA 2897
ETA 7753
Soprod Newton
VMF 6710
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