Screw Seiko 012.539 Second reduction wheel screw for Seiko 7005, Seiko 7006, Seiko 7016, Seiko 7018, Seiko 7019, Seiko 7S26, Seiko 7S36.
€2.00
Screw Seiko 012.539 Second reduction wheel screw for Seiko 7005, Seiko 7006, Seiko 7016, Seiko 7018, Seiko 7019, Seiko 7S26, Seiko 7S36
Below figure is an example for this calibre type:
