Seiko 603 Movement Details

Seiko caliber 603 is an automatic watch movement produced from around 1960.

Sub-brands: Seikomatic, Silverwave
Day / date?No
GMT / world time?No
Chronograph?No
Hacking?No
Rate:18,000 bph
Number of jewels:17, 20, 21 or 30
Size / diameter:27.6mm
Height:4.8mm
Stem code: 351610, 351611, 354610, 354611, 354613, 357610
Notes:Effectively the same as cal. 6201. Replaced by cal. 830.
Related movements: 3140 6201 830

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