IWC winding stem 85 852 853 8521 8531 specific thread 1mm "fine turn" / pre-owned

Tige de remontoir IWC 85 déja utilisée / IWC 85 pre-owned winding stem

Specific IWC thread 1 mm fine turn for IWC crown first generation, not for crown with standard 1mm thread.

Filetage fin spécifique IWC 1mm, pour anciennes couronnes IWC, différent des filetages 1mm classiques.

Same stem for all following cal : 85 / 852 / 853 / 8521 / 8531

Length 12.7 mm (please make sure it is long enough before purchase)