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PostPosted: Tue Oct 22, 2019 3:51 pm 
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I was cleaning my aerospace chronometer and I noticed some numbers etched between the lugs . 4203 B3
What does that mean?

Image

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PostPosted: Wed Oct 23, 2019 2:47 am 
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It's the date the case was made. 42nd week of 2003.

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PostPosted: Wed Oct 23, 2019 5:00 am 
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Thanks.

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Breitling aerospace chronometer
Oris aquis depth gauge
Oris Artelier Worldtimer Centennial
Vintage 1920 Oris
Vintage 1920 Hamilton pocket watch


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PostPosted: Wed Oct 23, 2019 9:08 am 
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Useful article @

https://www.breitlingsource.com/articles_dating.shtml


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