Your dial is definitively repainted, not a NOS one. NOS should have the textured 'guilloched' sub-second dial (as can be seen on this moon phase, but this would be similar for the regular version)

However, if your dial did not have this guillochage initially, and had the date in blue, there are chances that it was already repainted / not original, so all in all your watch is obviously in a much better state now (and I believe the red date is indeed correct for your dial version)