I disagree. I think the case is original. That logo dates from about 1915 to 1920. The hands may either just be relumed or replaced.
The dial looks original to the period, but had its radium stripped off in a prior cleaning.
It's a tough call as to what to do with the dial at this point. In it's current state, it's extremely fragile and if someone isn't careful when servicing the movement, say goodbye to it. There are a very few craftsmen who can repair and/or stabilize the dial, but I really don't know who they are.
Nice early Omega wristwatch.
gatorcpa
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