Calibre 89 - 1940s

Whats the history with this model? having it restored by IWC at the moment. 

Hi Jetspower,

nice and interesting watch you have. Looks like early fourties', International Watch Co script without Schaffhausen below. Are you sure it is Cal. 89, which was first produced in 1946?

br

Cromagnonman

They've identified it as a Calibre 89 during the diagnostic and provided the serial No. as well. I looked the serial No. must be late 40s.