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
-Monopusher Chronograph
Hands
12 Hour Chronograph Hand at 6:00
15 Minute Chronograph Hand at 12:00
30 Minute Chronograph Hand at 12:00
30 Minute Chronograph Hand at 3:00
Central 60 Second Chronograph Hand
Central Date Pointer
Central Hour Hand
Central Minute Hand
Central Split Second Chronograph Hand
Date Window at 3:00
Date Window at 6:00
Day Window at 11:30
Hour Hand at 12:00
Hunter Small Seconds Hand
Month Window at 12:30
Open Heart at 6:00
Small Seconds Hand at 6:00
Small Seconds Hand at 9:00
Brand
A. Lange & Söhne
Chronoswiss
-Valjoux
Sellita
Universal
Venus
Winding
Automatic
-Central Rotor Automatic Winding
-Uni-Directional Automatic Winding
--Counter-Clockwise Automatic Winding
Hand winding
Regulators
ETACHRON
Indexed
Screw Regulator
Screwed Balance
Swan Neck Regulator
Production Periods
1910s
1920s
1930s
1940s
1950s
1960s
1970s
2000s
2010s
2020s
Frequency
18,000 A/h
21,600 A/h
28,800 A/h
Anti-Shock
Incabloc Double-Cone
Jewels
15
17
21
25
30
36
Balance Mount
Balance Cock
-Balance Cock Clockwise
-Balance Cock Counter-Clockwise
Back-Side Features
Balance
-Balance at 1:30
-Balance at 12:00
-Balance at 12:30
Column Wheel
-Column Wheel at 6:00
-Column Wheel at 6:30
Chronoswiss C.125
L1924
SW500 M MP a
SW500 M MP b
SW500 M MP c
SW500 M MPC a
SW500 M MPC b
SW500 M MPC c
SW500 MP a
SW500 MP b
SW500 MP c
SW500 MPC a
SW500 MPC b
SW500 MPC c
SW501 M MP a
SW501 M MP b
SW501 M MPC a
SW501 M MPC b
SW501 MP a
SW501 MP b
SW501 MPC a
SW501 MPC b
Universal 335
Universal 339
Universal 60
Valjoux 1
Valjoux 18
Valjoux 2 BR
Valjoux 23C
Valjoux 24 KV
Valjoux 25 SRV
Valjoux 26
Valjoux 3
Valjoux 54 VB
Valjoux 57
Valjoux 6 KF
Valjoux 61 VBB
Valjoux 7
Valjoux 71 GHH
Valjoux 76
Valjoux 8 KL
Venus 196
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