Learning more about my late grandpa's watch

Hey all!

My grandfather passed away a few years ago, and I inherited one of his old watches, a bumper Omega. It seems to be reference 2577-14 (according to the case back). The crown has been replaced with a non-Omega crown and the band is definitely not original.

I was thinking of finding one of those clover crowns to at least restore the watch to its original appearance. However, upon digging further, I'm beginning to wonder more about the watch. Has the case been replaced? Is the caseback original?

The serial number of the watch is in the 10 million range. According to Bob's watches, this means the watch was made between 1944 and 1947. Does this check out with the 2577-14? IIUC that reference was made in the 50s, not in the mid-late 1940s. The Omega website puts the reference in 1949.

Additionally, does the dial look all original? Or has it been redone? None of this will change what is to me a priceless watch, but I would love to learn more about this piece.

Thanks all!

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Pictures:

I don’t know enough to opine on the originality of the watch or its various parts, but it’s a beautiful looking case and dial in my humble opinion.

I like it, if Omega didn’t make one like that…..they bloody well should have!

Looks to me like a 28.10 movement & dial transplanted into a 354 case. As others have said, disregard the fact that it is not “original”. It’s a fine looking timepiece and will be a pleasure to own and wear. One last thing, the 35x series of bumper autos developed from refinements to the 28.10, the 35x caliber numbering system starting in 1949. That’s why the case fits so well.

I sorely miss the pink pages, RIP Dr. Ranfft