Can anyone give me any information about this Omega?

Hi! I will start by saying I do not know much about watch craftsmanship or Omega watches specifically but would love one of you experts could help me learn more about this watch- time period, what it is made of..etc

This watch was given to me-belonged to my grandmother who owned it in the 40's-60's.

The watch face says - Omega and Anti magnetic underneath
The back says Omega Swiss made- 18 /.750
on the clasp it says "Omega 18k"
Here are a few pictures. Anything would be helpful! Thanks!

I apologize for posting the pictures so many times!!

That is ok!! Glad to know, and still special to me 😀 Thanks again

That's a great attitude. Often times, sentimental value is much more important than "actual" value. If you choose to, you can earn enough money to buy any thing you want, but nothing can replace a gift from someone you care for. My most cherished possession is my grandfather's old razor. It's worth about $10.00 on eBay, but it is priceless to me.