So keep in mind that Omega doesn't condone putting parts from one watch on another - they only want people to put the bracelet on a specific watch that was what originally sold on that watch, or in the case where the original bracelet was discontinued, they will often have a replacement. So as a result Omega doesn't publish any lists that show how parts interchange between watches. The only thing you can really look up is what bracelet goes on what watch, so I've done that below...
Old ref# 231.10.34.20.57.002 - bracelet is 020STZ001601.
New ref# 220.10.34.20.57.001 - bracelet is 020STZ006278.
Now bracelets are often used on more than just one reference number, so using the bracelet numbers I can then look up all the cases that the specific bracelet is used for. Sometimes you get lucky and see that the bracelet is compatible with the case you are trying to fit it to, but in this case not so much. Information is below:
Bracelet:
020STZ001601
Cases:
055STZ001735
055STZ002089
055STZ004692
Bracelet:
020STZ006278
Cases:
055STZ006219
055STZ006562
Since the two bracelets are never called out as being used on the same case, there's no way anyone (not even a Boutique) can tell you if they will fit other than physically trying to fit one.
Cheers, Al
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