Its old but not really complex, most watchmakers could take care of it easily for half the price you're talking about or less, Omega tend to replace everything to make it look "new" again, so you'll get a new dial among other things and it'll never look the same again, knocks the value down to very little as well as taking away from the originality.
If you give them specific instructions to not change the dial, not change the hands and not polish the case they can do a decent job with the movement, clean it and change the crystal its just a lot of money to pay for that.
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