Purchased a older sub today

[jon84gt]

I must be crazy but I have been looking for one of these (I think). Stopped by a jewelry store today and they had a non-date for what I thought was a fair price. Serial number is 8502551 / J 58810. Didnt have the original box but it did include the service center box from rolex and paperwork dated 1991 when it went in for service. Watchmaker said it was a 1982 model. I was surprised at the shape that it was in. Not sure about the movement. Sub experts on here enlighten me! I will put some pics up tomorrow when I recieve it. . Had it shipped about 10 miles down the road to Ga. where I actually live to save the taxes (lol). I def didnt think I could get hurt with the price.