It appears to be a refinished dial and a pretty good job.
The Omega symbol doesn’t have the uplifts
The “S” to the “e” in Seamaster is off, also not visible in this picture is the “s and “t” which is also different.
The 6 is more rounded
You're comparing two very different dials. Date dials can't really be compared to the no-date dials. Big triangle dials aren't like the standard dials. There are about a dozen +/- variants between the two references.