I Just got a IWC Pocket watch from my dad

I got this IWC Pocket watch from my dad, but It doesn't have any papers or box, only the watch. I wish I can know How old this model is, How this is made, Is this vintage model? so It can be a collectable pocket watch? Help me out here.

I Just got a IWC Pocket watch from my dad

I try to post pictures again.

i471.photobucket.com/albums/rr73/timetouch012/1008.jpg

It looks like a Ref 5201

and the image from the dealer book is from 1980.

I think all IWC pocket watches tend to be undervalued compared to wristwatches.

An excellent family heirloom.

Cheers from the cellar