Wonderful inheritance. The definitive information needed to identify the reference and manufacturing date are inside the watch, so if you're comfortable removing the back and posting photos, we can give you more information. As you probably know, your watch has a "bumper" automatic movement, and you can probably feel the oscillating weight moving when you wear the watch. Unless you are very attached to that particular bracelet, you might consider replacing it, since the spring-loaded end-links can damage the lugs over time.
Regarding repair, your best bet is to search the forum for recommendations (I use google, and limit the search to the omegaforums.net domain). Here is one thread I found, and I'm sure there are others.
https://omegaforums.net/threads/a-shout-out-to-my-watchmaker.104027/#post-1362039Click to expand...