Seeking advice for this small jewel...

HI all, good morning. Today a colleague of mine took this jewel to me to show this 1967 Omega. The watch in my hands weights around 50g. My colleague would like to know the value of his aunt's watch. The case is original and there is also the warranty card with the date of purchase.
There is the company logo on back, so it's a watch her company gave her for the first 10 years.
Thanks for your kind attention, because I have no idea, apart from the gold value...

Thanks for your kind (and fast!) answer. Just a question: what is a SS? So maybe would it be better to sold the bracelet separately as gold?
Thanks again.

Bracelet not original, but probably good weight and can be sold separately. The head on a leather strap can be sold to somebody looking for a nice ladies' Omega, may be around 400 gbp to the right person - depending on several factors

Thanks all, I've given all the infos to my colleague, He'll think about the destiny of this watch. My opinion is that if he wants to get some cash, he would better sell everything separately: bracelet, box, watch (adding a low cost strap). Any other advice will be helpful.