Assistance identifying my vintage sub

[jioannou]

Hi all

Long time lurker - recently made an account.

A close relative passed away and left me this watch in their will - I always mentioned that I loved vintage subs. I currently have a day-date, ceramic gmt and a few other toys.. but I’m not too familiar with old sub models.

Can someone help me identify this watch, and tell me about it? There is no box or papers so I don’t have the serial number.

I note the condition is pretty bad (you can see part of the lume has has fallen off from the second hand) and i will go and get it serviced by Rolex pretty soon (i am going to tell them not to polish or touch the dial).

Thank you all!