Better pictures are always a plus. These pictures make it difficult to determine dial originality for sure but I would hazard a guess and say it looks pretty good. I have a similar ref. 2635 and yours looks good overall (hands, crown, case). Mine for comparison...
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Yours should have the cal. 354 automatic bumper inside and I wouldn't worry about not having Seamaster on your dial, I believe they came both ways. When you get this in your hands post some clear pictures of the dial and we can better determination its originality. It looks like you picked up a nice ref. 2635 but maybe next time you should ask for advice before you buy to avoid any disappointment!
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