Somebody could help me to identify this inherited watch?

Thank you so much!
Name initials of my granpa plus a date of 1978, engraved on the backside.
Serial N°: 2210129
Photos:
[](s665.photobucket.com/user/patwolt/media/IMG_3296_zpsruqaqkfp.jpg.html)
[](s665.photobucket.com/user/patwolt/media/IMG_3294_zpsvxuavhzr.jpg.html)

Have a look at the following link:
www.iwc.com/forum/en/discussion/18478/

Click here for ref. 3276

I think it's the same model.

Regards,
Jack Freedman

Jack, that's great, thank you so much! Yes it is the model. You made my day. Thanks again! Regards Patrick