speedmaster moon watch authentication please

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just purchased this speedmaster off ebay for a fair price, but due to it being my first one just wanted to make sure its all as it should be while iv still got time to send it back , altho it looks good to my naive eyes from all the research i could do, would be nice if someone could set my mind at ease. (the photo are taken by me not the seller )

many thanks
 
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77 million serial?

The movements legit post 1989. More like mid 90’s at the earliest as I see 18 jewels marked 18.

Need to see dial and bezel to give more info.
 
Posts
3
Likes
1
77 million serial?

The movements legit post 1989. More like mid 90’s at the earliest as I see 18 jewels marked 18.

Need to see dial and bezel to give more info.


number is 77046xxx, the same number is ingraved on the lug

strap is 1998/840

i was sold it as a 1998 ish watch


sorry if my photos are pants its really hard on a phone lol

many thanks for your help so far