Firstly, congratulations! you have a beautiful , and very genuine Tudor submariner...... well at least for the most part.....
I'm 99% sure your hands are aftermarket.... look at the length of the end piece on the second hand, away from the lumed section... it's considerably shorter than the length of the genuine snowflake second hands...also the finish is highly polished, which is not correct. These are both tell tale signs of aftermarket hands.
The originals were always slightly brushed to dull down the finish a bit.... but seriously, these are minor issues on an absolutely gorgeous watch!!!
Wear it in good health, and tell anyone who questions any authenticity to go stuff it, they're just jealous!!!!
All the best
Eddog