Submariner Dial question

[tobago]

This is quite a forum that I have just discovered--the info is amazing.
I have been reading, reading, reading......

That said, I do have a question....or two, that I hope you can help me with.

I purchased my Submariner in 1964/65 in Trinidad as I was doing a lot of diving at the time and have owned her ever since.

She was not worn much in the late 60s/70s/80s.

I had her refurbished in 1987; sent off to NY as I recall.
She was worn for a few years and then back to drawer and worn on/off but not much for the last 15 years.

edited
So your very helpful site has got me figuring out which model she is, etc.

I thought for sure she was a Ref. 5512 since she has the "4 lines" for the Chronometer on the dial.
But I took her to watch guy today and she is a Ref. 5513.
It is clearly stamped inside the back and on the edge.

The Rolex guy also confirmed that it's a Caliber # 1520.

So why does she have the "4 lines" on the dial since a 5513 is not a Chronometer, right??

Additionally, it's a "meters" 1st dial, not "ft" 1st--I haven't seen any photos with a dial with the meters first.

Additionally, it says "Swiss" at the bottom, but not "Swiss < 25".

So I am curious as to these differences and thought I would ask the experts.

I will really appreciate your clearing up the mystery for me.

many thanks!!!!