Oh! That's a stunner! Looks all genuine to me, and I am sure members will fill in with more infomation. The dial looks just great for a watch from the 30's! @gatorcpa will most likely add some info here. Look at this thread in the mean time...
That version ( 1 pusher and crown reset )can be earlier. From 1936 on. Dial unmolested. If the numbers check out ( get an omega museum excerpt ) and it is serviced, value at Phillips auction ( they will take that ) could be around $ 30000. Kind regards from Australia. Achim