Omega constellation opinion

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Hello everyone,
I’m Yami, a new Omega enthusiast for the past 2 years.
I have a small but cool collection, and I recently acquired this watch:
An Omega Constellation that doesn’t seem to be original.
Just for context: I’ve been servicing my own watches for about a year now, and through practice I’ve become reasonably competent in amateur watchmaking.
Back to the watch -
It looks like the case has been replaced with a Seamaster case.
My questions:
Are the dial and hands original?
What case reference would correctly match this dial? Is it the 2852?
Thanks in advance to anyone who can help!
 
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This is a little bit all over the place. It is indeed a seamaster case, dial is refinished, second hand is too long.

Wouldn’t be a 2852 as those didn’t come with a bumper movement, and as far as I know MAYBE some of the 2648 constellation had a 351 movement but someone more versed in these early Connie’s can guide you.

Overall, this is definitely a franken put together watch that’s trying to pass as a constellation
 
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Definitely a star in the world of franken watches. Hope you did not pay too much for that.
 
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No Constellation had a Cal. 351 movement. Seamasters of this era would have cal. 351 and Ref. 2577 case. It is my opinion that this is a Seamaster watch modified to look like a Constellation.

The chronometer rotor was imported from another watch, maybe a cal. 352. The dial is likely an Asian fake.

Looks like someone worked on the caseback to create a depression to fit a medallion, but they didn’t find one or it fell out.

The watch itself is a mess. However, you have a nice stash of hard to find parts if you collect other bumper Omega watches.
gatorcpa