Screw Seiko 012.539 Second reduction wheel screw for Seiko 7005, Seiko 7006, Seiko 7016, Seiko 7018, Seiko 7019.
€2.00
Screw Seiko 012.539 Second reduction wheel screw for Seiko 7005, Seiko 7006, Seiko 7016, Seiko 7018, Seiko 7019.
Below figure is an example for this calibre type:
