Advice on a Seamaster

[watch_er]

Hello everyone - I found this Seamaster for sale, and I have sent some questions to the seller requesting additional and better photos, including caseback and movement, but wanted to share here and request any feedback from you all. I do not know the reference from these photos and black dials are difficult to spot for originality, but this one to me looks like it could be original. Case looks pretty sharp and possibly unpolished and not sure about the crown.

 

[X350 XJR]

Looks like a ref 2635. Should have a bowler crown. Need better photos of the dial to make a proper evaluation.