Rolex Submariner DOB

[oo7ml]

Hi,

I am looking to acquire a Rolex Submariner (no date) from 1983 (my DOB).

Can anyone else with the following questions please:

01 - Reference: I always thought the reference was 5513 as that was produced up until 1989, but I see most on Chrono24 listed as 16800. Can anyone provide any insight on this?

02 - Colour: some of the hour markers show up as silver, where as others look like a faded yellow. Can anyone explain why. I personally like the faded yellow look as it looks more vintage.

03 - Bezel Marker: again the dot at the top of 12 on the bezel seems to vary in colour. Any information on why this is, would be great too, thanks.

Thanks in advance for your help.