I think the crystal is correct to the watch and I vote for keeping it as is 😀
If I remember well, the reference for the crystal with loupe is PZ5076 L
The genuine crystals are not as domed as the service replacements, so are being called flat top crystals.
so pz5076 is the genuine part or the service part? I want to change the crystal more for my personal preference, I really don't like the loupe.