Without wanting to be a party pooper, I think the dial has been re-done at some stage.
The OMEGA is not centred correctly, the vertical bar of the E should be closer to centre, that is, almost directly beneath the gap in the Ω. However, the AUTOMATIC seems to be correctly positioned which makes the OMEGA stand out even more.
The Seamaster is tilted, not level with the etching.
I also think I can see some residual minute markers, mainly between 5 and 10, but it could just be random spots.
While the shot isn't absolutely dead square on, it's enough to make me doubt originality. Not that it is a bad thing, many watches of this vintage were cleaned and re-inked as part of a service, the owners and watchmakers were not thinking of pedantic collectors yet to be born.
I've attached a shot to support my theory and welcome any comment.