That looks like a ref. 14730. Whatever it is, those hands don't belong on it - it ought to have baton hands and the seconds hand is too short. Also the crown though possibly a correct service replacement is crassly unsympathetic for the watch.
None of this really matters, though, as those things can be fixed and (as stated by
@Shabbaz) you've only gone and got yourself a Seamaster with an original crosshair black dial. It's "the" Mad Men watch, it's an extremely rare dial and a lot of people are desperate to get one. Keep it, get the hands and crown fixed, and love it. Good catch!
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