Omega Speedmaster 145.022-69 Correct Bezel DON vs DNN

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Hi everyone, I would like to know if it has correct bezel. I know that crono hand looks changed. More info is wellcome. Thanks.

 
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Good news is I don’t see an issue with the chrono hand.

Bad news the bezel is a later replacement.
 
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Good news is I don’t see an issue with the chrono hand.

Bad news the bezel is a later replacement.
Thanks, that's what I suspected.
Might also be time for a new caseback gasket.
I know, those are pics from seller.
 
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Serial is 30,596,xxx? So "DNN" bezel" would probably be correct.
 
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I'm not convinced that bezel is a genuine omega part at all, seems like an aftermarket version of the previous service bezel. Something to do with the downward slant of the 7s and 2s
 
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I'm not convinced that bezel is a genuine omega part at all, seems like an aftermarket version of the previous service bezel. Something to do with the downward slant of the 7s and 2s
huh?
 
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Bezel looks like later Omega bezel for 3590.50 or 3570.50 from late 80's-90's, with the accent and the shorter TACHYMETRE text.
Correct bezel for this SN 30.506.xxx would probably be B1 (DON), or possibly B2 (DNN) as the SN is on the borderline for the changeover. The current bezel looks good, but if you want a correct one the B1 will be expensive, but the B2 is more reasonable and "close enough" IMO, and easier to find.

speedmaster101.com good place to start