When they were produced, the dials were supposed to sparkle around the engraving, but some were more matte finish and there there was an issue matching the date rings. In the end, Paul sent the watches with the best dials installed, and an extra dial and date ring along with the watch, just in case something went wrong with them.
Sparkle in the watch

Matte in the box
Bleeding a bit around the black lume, after 12 years.
I think a manufacturer might go through far more "test" dials refining the finish than your one of eleven watch.