I am looking for screw down crown for my Certina diver.
Crown tubus is 3mm. Crown size let say 6mm or bigger.

I am looking for original Certina (but wil probably never happend) or generic crown that will go on inner thread tubus.
I only found crowns for 2,5mm tubus.


For any info, please let me know. Thank you

 

Have you checked cousinsuk?
Is it internal or external thread. Is it the size in the case that has to be 3mm tube? Maybe making a sleeve would work? Or taking something from an other watch.