Is this an Omega?

My son acquired this (no cost) from one of his wife's family, no idea of how or when it came to be owned by them. I have been tasked with finding out as much as possible about it.

I joined the forum in mid-December and have looked at a lot of watches (both in the forum and elsewhere) and am confused:

Omega watches do not seem to commonly come in that (rectangular with hints of an octagon) shape. Also it's very 'chunky' for a dress watch

The second hand looks somewhat mismatched to the rest.

They rarely have backs with inscriptions such as this has, nor do they seem to have '4-screw' (don't know the technical term) backs.

The only hint of a relationship with Omega apart from the name is that the inscriptions on the dial look to be the same as those of a De Ville of about 1999.

My question is: Is it worthwhile to take/send it to a professional to open it up (I can't) and see what's inside? Although it is already owned, it would not be a disappointment to have it declared non-genuine. A subsidiary question, however, is that if it is not an Omega, why would someone make what appears to be a very uncommon article which would invite research?

Thanks in advance for any comments
JSB

Thoroughly fake. Sorry.

My eyes, my eyes!! 🤦

Ouch. Sorry mate.

Thanks - not too surprised, but why would someone bother?

If you can make something for $1 and sell it to a tourist/other easy mark for $50...

Well, someone bought it at some point!
This isn't a new fake, probably dates from the 1990s, and cost $1.25 to produce.