Please, could you help me to identify this C 89 ?

Hello, I have just bought this beautiful vintage but it's difficult for me to identify the model and the year of production. This watch has a gold case 18 K N° 1215367 with very awesome lugs. The caliber is the famous 89 n° 1286980.
Is these somebody kind enough to help me?. Many thanks.

oups....how to join the picture on my post on this forum ??

Here you go.

[](s1378.photobucket.com/user/Giorgiorital/media/20170422_175851_zpspdbmlaru.jpg.html)

Here is the watch

thank you Bill !

Absolutely nice timepiece. Consider to get it to Schaffhausen for a SPA treatment. Those lugs are indeed magnificent (with the Cal. in the watch having it's own great legacy)

Thanks, it's a very nice watch and I'm very proud to be the owner of which. I believe that this watch was built around 1955. with this Cal N° 1286980, is there somebody able to help to confirm this date.
Nice week-end for all.

The "Date Your IWC" app for this case No:

Please don't be shy GG10...plenty of pic's will do no harm......