Expert opinion wanted: genuine tudor submariner?

[imperial2687]

Hi everyone,

I have just recently got into horology and I am interested in purchasing this vintage Tudor Submariner Snowflake (ref 9411) as a present for my Dad, watch only no papers.

This will be my first vintage watch purchase ever, so I would be grateful if the expert collectors in this great forum could help me out and tell me if they think this is a genuine watch or a replica/fake. I don't want to end up wasting my cash!

Any help will be greatly appreciated, so thank you