There are a lot of things to say...
First, this 5508 came. Then, the 5513, then the 1680, then the 16 800 / 16 8000, and then the 14060, and the 16610, this last one will probably be disconrinued, as the rumour says...
Among the " without date " you have all the no crownguards ( as the 5508 ), the 5512 / 13, and the 14060, all the others being with Date.
Between a modern and a Vintage, some things changed, as the movement, and the COSC, too.
But here again, there is a lot to say, because you had to wait for a certain date to have the hacking seconds, for example...I think 1970 or 1971.
Have a look on Dr Strong's Review about the Submariner, it is well done, and very informative.
Best, my friend.
Nicolas