Watches for sale, potentially , value?

I think it’s a Sub reference 1680 which should help you google value.

If it’s that old I would have expected more patina on the markers? Perhaps there is and the picture doesn’t show. Any idea of history? Could there be a service dial in it?

I would say 7k is where it’s at given the bracket I assume is in poor nick, bezel pip missing and I am guessing some deep dings.

copying this from other thread as the bold bit is super important.

OP just a little advice. Thats a 1618 reference Sub from 1969-1979. There were a a few very collectable ones at the time...the "red sub" "Comex" and some "Mil Subs", your watch is not one of those so dont get too excited. The condition is also pretty rough. With these Subs if you want the best price you need to get Rolex service papers and that will cost around 1500 euro to 3000 euro depending on what they change. Why bother?...well at this age you are going for the 40 -50 year old collector looking for a birth year watch so having some providence is a good idea and knowing the exact year of manufacture. However you dont want the dial or hands changed as collectors like to have the originals. That bezel needs a new one, but keep the old one (remove it before sending it to Rolex and claim its lost same with the bracelet). You need the Rolex service not an independent.

If you had the watch in perfect condition new bracelet and new bezel fully serviced, origional dial and the spare origional braclet and bezel, you could see 10-11k out of it. As is 7k (more on the high 6's or low 7's to be honest). So basically the cost of service is the difference. Unless you are very patient I would consider selling to the likes of Chris in Ichrono or on adverts. Chrono24 will take an extra 6%.