[Serenityvalley]

This is Omega is advertised with a 14389-1 caseback. However, the dial does not have the Seamaster script.
Looks a little rough and much of the lume is missing. Did all the early 14389-1 have the Seamaster script and logo on the caseback?

 

[cbruce]

I don't believe that all Seamasters of the era had Seamaster on the dial. If you look at the Vintage section on omegawatches.com you'll find that they display a 14389 without Seamaster on the dial, but Omega still calls it a Seamaster.