Anybody ever seen a 563 cal like this?

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I recently purchased a vintage big triangle seamaster. However, I’m having trouble matching it with another 563, specifically regarding where the words “unadjusted” are and the jewel count
 
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Was the cal 563 not intended for us market with less jewels ? Tax reasons? Use google.
 
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Yes. Quick search. 166024 came with cal 563 with 17 jewels.
 
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Thanks Shabbaz -- except that is what I'm worried about. The location of the engraving is different. Is that something I should be concerned about?
 
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Start by asking a extract. So you know if the serial is correct for a 300
 
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My 563 has the "unadjusted" above the "seventeen jewels". It is a Seamaster but not a 300.
 
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My 563 has the "unadjusted" above the "seventeen jewels". It is a Seamaster but not a 300.
All the 563 movements I could find look like yours. I've found 550 movements that have the word "unadjusted" below the "seventeen jewels" which leads me to believe that they used the bridges interchangeably
 
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It’s possible, if I remember correct they are interchangeable.
 
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Not a problem - they came both ways. There's actually no such thing as a "563" bridge in this location - it's a 550 part.

Cheers, Al
 
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Not a problem - they came both ways. There's actually no such thing as a "563" bridge in this location - it's a 550 part.

Cheers, Al
Thanks so much!