Double stamp is not unheard of.
https://omegaforums.net/threads/speedmaster-double-reference.21742/
Looks like original pushers. Crown seems ok, what makes you think it's not?
Bezel is correct. You can see the dot, but not much of the 90.
By the movement number, it's more likely 145.012. Am extract would confirm.
Overall, not a bad watch. What's the price? I'd want more / better pics. Especially in natural light.
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