Gorgeous, and even better it is a family piece. I would keep it for sure, but no doubt you are already fending off offers to buy it. If you do decide to sell it, be sure to research the value before even considering accepting - these are quite valuable, I would say as much as US$10k+ in the apparent condition, even without the original bracelet.
You can keep it as a "safe queen" but they are more fun if worn. To wear it, it should be serviced if it hasn't been in the last 5-7 years. And, it being vintage, you should avoid getting it wet or putting it through too much physical trauma, but it is certainly robust enough for daily use. Zenith made the movement well!