infos needed on 16800

[spirotechnique]

To all the Rolex experts, I would be very interested to collect more informations on my latest catch a Submariner model 16800 serial 7063XXX



Form what I have collected from the web I understand that :
- this watch is from 1981 which is the first year of production of the 16800
- Early 16800 share the same case as the last 1680 : smaller crown guard compared to later 16800
- the matt dial was only installed on the 3 first year of production (1981-1983)

I would like to know if thoses infos are correct and if you can give me some other inputs on this watch
cheers
JM