Grand Seiko watch movements

Japanese name: グランドセイコー

Originally a sub-brand but Grand Seiko has now become a global brand in its own right.

Movements
1944
1964
1984
3180
3F81
430
4420
4520
4522
4580
4J51
4J52
5641
5645
5646
5722
6145
6146
6155
6156
6185
6186
6245
6246
8J55
8J56
8N65
9581
9587
9F61
9F62
9F82
9F83
9F85
9F86
9R01
9R02
9R15
9R16
9R31
9R65
9R66
9R84
9R86
9R96
9RA2
9RA5
9S25
9S27
9S51
9S54
9S55
9S56
9S61
9S63
9S64
9S65
9S66
9S67
9S68
9S85
9S86
9SA5
T0