Possible 1675 purchase

[cmoray]

I have an opportunity to purchase a Rolex 1675. I am not an expert but here is what aI could find after some research. From the dial and hands the watch seems like a pre 1967 model. Black bezel was not used until early 70s so it seems non original for this watch. Also jubilee bezel was used later so it is not original for this watch. Can you please check the pics and let me know what is right and wrong about it and how much I should offer.