Last week we saw some details on IWC pocket watch chronometers this week a look at an early wrist watch chronometer.
Anyone see a vintage wrist chronometer?
https://www.iwc.com/member/forum/search_all.asp?table=archives&subject=chronometer&archived=yes&id=18437
"Chronometer Grade" Cal.89 question...<<
https://www.iwc.com/member/forum/search_all.asp?table=archives&subject=chronometer&archived=yes&id=42716
As always it is worthwhile following the threads in the post (even if the second is quiet long)
Cheers from the cellar