1966 Speedmaster Professional Case Back

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What is the correct case back for a 1965-66 Speedmaster Professional? I have seen both the styles of case back on these watches. Is there a correct case back or do they come with either style? I purchased this watch in 1966 from an authorized dealer and has been in my possession ever since.
 
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Pictures would help 😀
But: if you bought it in 1966 it will most likely be a caseback with bevel. A '66 purchased one will most likely be a 105.012-65 or 105.003-6x reference, those came with the bevelled caseback.
 
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congrats on what must be a cool, one-owner vintage speedy. pics please!
 
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Pictures would help 😀
But: if you bought it in 1966 it will most likely be a caseback with bevel. A '66 purchased one will most likely be a 105.012-65 or 105.003-6x reference, those came with the bevelled caseback.
Thanks
 
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Thanks
Added photos. Several years ago, I had the watch serviced by Omega in Switzerland. They changed the dial and hands during the service. Fortunately, they sent the pieces back. Have them safely stored.
 
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I had the watch serviced by Omega in Switzerland. They changed the dial and hands during the service. Fortunately, they sent the pieces back

Bezel and pushers also replaced 🙁
 
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And obviously the caseback too. So they sent back the dial and hands, which is good. Does this mean you no longer have the original caseback or bezel? if so that is unfortunate as each will be 4 figures to replace if you so desire.
 
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Forgot about that. Original pieces returned by Omega and safely stored away.
 
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Have you got a picture of the original dial?

Even better, have you got the service paperwork showing the serial (and reference)?
 
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Have you got a picture of the original dial?

Even better, have you got the service paperwork showing the serial (and reference)?
I'd have to do some digging to find. But yes, I still have the service paperwork. All the old parts are in an envelope locked away for safe keeping.
 
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What is the correct case back for a 1965-66 Speedmaster Professional? I have seen both the styles of case back on these watches. Is there a correct case back or do they come with either style? I purchased this watch in 1966 from an authorized dealer and has been in my possession ever since.
Hello! One of the case back can be this… Ed White 105.003-65 case back.
 
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wow. what a thrill. i hope you still have those original returned parts.😉
 
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So the original case-back was not returned? Just trying to understand the scenario and the motivation for the OP question.