Dude
If you inherited it, how about you just wear it and enjoy it? Or, do some research on the World Wide Web? A simple search would show you that you are not Indiana Jones and this isn't the Holy Grail.
This is your vintage Omega. There are many like it, but this one is yours (and, before that, presumably someone who loved you enough to want you to have it).
The reason you're getting jokey-jokey answers is that 15 people a day with question mark avatars and one post ask the same question as you - you can hopefully forgive these folks for getting slightly annoyed.
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