I need a help with this nice clean movement IWC
I know there are a BREVET 31457 and a BREVET 55231 from 1911.
Serien number dated it to years cca 1926-1929.
But what is it as a caliber number, please?
Like as Kaliber 65-19'''H6 or Kaliber 65-19'''H6,5 ??
there are not / missing/ a stem with crown and I want find it.
So big please
What is it for a caliber?
What all caliber from IWC comp. use the same stem for crown.
Where, / who / can help me with buying a stem for this movement.
thank for your help
Peter
