This was passed down after my grandmother. Recently found it again in the back of a locker after going missing for several years. It's got an original red box, says Omega Constellation on the inside, a certificate of high precision, the original international guarantee. Bought in 1964 apparently. Everything in almost mint state. I've never dabbled in old watches so I'm at a total loss. Could be worth 5 bucks for all I know hah.

Thanks in advance!

Torgeir.

 

That could be a solid gold+bracelet watch, worth more than $5. Better pics are needed though to see the gold marks. Look for things like those: https://www.google.es/search?q=gold...CHqiH4ASByIGoBg&ved=0CDEQsAQ&biw=1131&bih=762

 

It looks to be in very good condition. The fact that it has the original box and paperwork would help if it were a man's watch but ladies watches aren't very collectible so may not be much help with this.
If I were you and as it's in such good condition I'd hang on to it and pass it on to a daughter/wife/favourite grand daughter.
If you don't have any of the above get it valued at a decent watchmaker, an auctioneer and anyone that buys old gold to give some idea of its worth then put a price on it and sell it on ebay.