Is this a real Omega De Ville?

Hi,

I've recently acquired this Omega De Ville, put the pictures through google images to check the movement matches and the dial matches etc, so far so good but I'm wondering why on some of the models I've seen the "De Ville" part is italic and on mine it is not? I've also seen some which have the "Quartz" logo below the Omega logo instead of below the "De Ville" logo, is there a reason why these differences exist?

I'm also wondering why there is a clear plastic piece on the movement on some of these other watches when my one doesn't have this and the additional solder connections.

My model:


Other models I've seen:

Cheers,
James

Yes Sir, that's a real omega, i have ever seen that kind of de ville in my country

I've seen others that look the same as mine so potentially it's just an updated design?

Glad to hear, this is my first Omega so was just curious.