Advice on a very rare movement

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Dear All,
I need your advice about a very rare movement. I think it's a 320 which was beautifully hand skeletized and engraved. But I'm not 100% sure it is a 320. What do you think ?

I think it deserve a nice case. I would like to put it in a gold case (at least plated) but with a transparent bottom. Do you know of a compatible 320 caliber case that has a transparent bottom ?
What would you advise me to use ?

Thank you in advance for your recommandations !
 
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Omega 320 or Lemania derivative was the first thing coming into my mind too.
 
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Love that movement.
Looks great. I think 320 also.
You need a 320 movement ring and then a a gold or plated 320 case, maybe Omega or Tissot?, the older the better to mate the classic look of the movement. A good project but well worth it to show that movement off.
A display back can be made probably but if you do some homework I’m sure you will find one that is the correct size. All worth the effort.
I did a similar thing with a movement I found a few years ago, mine was an easy project though.Cheers, Michael
 
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It's certainly a skeletonised Lemania Chrono but an Omega 320?

To my eye Its got Piaget hand carved onto the central bridge so its either a non Omega Lemania or perhaps the work of a skilled aftermarket watchmaker.
 
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It's certainly a skeletonised Lemania Chrono but an Omega 320?

To my eye Its got Piaget hand carved onto the central bridge so its either a non Omega Lemania or perhaps the work of a skilled aftermarket watchmaker.

Never spotted the Piaget engraving.
The levers are nicely finished on the edges too.
 
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Definitely looks Lemania (Piaget/Omega = semantics 😉 ... they all are just copies with some minor differences). Absolutely beautiful...you may wish to keep the dial open as well 👍
 
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You're right, it's a Piaget 930xx but I think it is based on a Lemania or Omega 320. I also have the dial (see pic below). What I'm looking is a case. I want an open back and whenever possible saphire glass, gold case and dust / water proof pushers... What would you recommend ?