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
24 Hour Hand
Chronograph
-2-Button
-Column Wheel Chronograph
--6-Column Chronograph
Date
-Big Date
-Quick Date Correction
-Semi-Instantaneous Date Change
Hacking Seconds
Regulator
Hands
12 Hour Chronograph Hand at 9:00
24 Hour Hand at 9:00
30 Minute Chronograph Hand at 3:00
Big Date at 12:00
Central 60 Second Chronograph Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Hour Hand at 3:00
Small Seconds Hand at 6:00
Brand
Audemars Piguet
Chronoswiss
ETA
Frédéric Piguet
Vacheron Constantin
Winding
Automatic
-Bi-Directional Automatic Winding
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Clockwise Automatic Winding
--Counter-Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
Screwed Mobile Stud
Variable Inertia Blocks
Production Periods
1990s
2000s
2010s
2020s
Frequency
21,600 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
21
27
37
Balance Mount
Balance Bridge
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 10:30
-Balance at 12:00
Column Wheel
-Column Wheel at 2:00
AP 3090
Chronoswiss C.123
ETA 2895-1
ETA 2895-2
VC 1137
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