Sapphire case back for a 321. Do these make sense?

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Well, thanks to all you enablers, I finally hit "purchase" on a Thomas Priek caseback. The 321 is too beautiful not to admire.
 
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I plan to purchase my first Speedmaster and also like to view the movement. I want hesalite over sapphire. So my question is, should I look for a 3572, or simply find a 3570 + Thomas Preik display back? I like the look of the actual Omega display back better; but the benefit to going with the Preik is I'll always have the actual Speedmaster case back.
The downside is that you will see a less finished movement with the plastic brake through the Preik caseback.
Look for a 3572, they're not much of a premium over a regular 3570.
 
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I got a brushed finish thomas preik case back installed for my 321 about 2 weeks ago. I suspect a polished finish may match the case better, but can't be sure cos I don't have one for comparison in the metal.

Anyway I'm glad I did it as the 321 movement is a real beauty.
 
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Got it today.

Was telling my son that I was looking forward to getting a sapphire case back.

His response: oh cool, you can see through your wrist.

My response: no, that's not how it works, in allows you to see the movement.

His response: of course, you can enjoy it while you are wearing your watch.

He got is sarcasm from his mom.

 
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That looks awesome! I was thinking of picking one up too...
 
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The downside is that you will see a less finished movement with the plastic brake through the Preik caseback.
Look for a 3572, they're not much of a premium over a regular 3570.
Seconded, go for the 3572.50
 
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Got it today
Love it! Some have hinted these work with a 2998 but give few details. The seller says no. For now I'm not taking the risk.
 
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Finally got around to putting mine on Ed. So worth the investment.
 
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Love it! Some have hinted these work with a 2998 but give few details. The seller says no. For now I'm not taking the risk.
why wouldn't these work on 2998? they're advertised to work with 105.002 - which is a 2998 really.
 
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why wouldn't these work on 2998? they're advertised to work with 105.002 - which is a 2998 really.
Good question. I asked about a back for a 2998-2 since it isn't listed as an option. Thomas answered:

sorry i dont have a Sapphire Caseback for your Watch, possily in future i make some.