Help with Replacement Crystal for Omega Seamaster 168.023/166.032

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Dear Respectable Members

I am searching for a replacement crystal for a Seamaster Chronometre 168.023/166.032. Most grateful if you could point me to the correct crystal # with magnifier over the day-date field like the image below. Many thanks.

 
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I believe PX5111 for tension ring. Add an L for the magnifier.
 
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I believe PX5111 for tension ring. Add an L for the magnifier.
Many thanks. Do you know is PX5123 would also work?
 
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Many thanks. Do you know is PX5123 would also work?

No idea. Generally you need the specific crystal to ensure correct diameter, height, tension ring etc.
What reference is that crystal for and why do you think it would fit?