Help identifying this watch model

Welcome @mlau1294
Congratulations- You have a very nice gift from your father.
@nanjingcigaretes is likely correct, you have an dome dial, Omega Constellation, Omega’s top of the range watch, with the reference 14900 ‘dog-leg’ case - which would date it pre-1963.
Good looking dial with onyx inserts in the indices and the ‘missing text’ format script on the dial.
It should have a cal 551 movement.
Looks like the original crown.

Additional photos would help
Does it have a stainless steel caseback with a gold medallion?
If so, it has a Gold-capped case (a thick layer of gold applied to the case )
It also has a 5-row BOR (beads of rice) bracelet, which looks to be gold-plated

If you are going to wear it, you should plan on having it serviced by a competent watchmaker experienced in working on vintage watches.

Here is a link to an excellent site all about constellations

http://omega-constellation-collectors.blogspot.com/

hope that helps.

I’ve recently sold a 167.005 here - gold-capped, dome dial, like yours. 14900s and 167.005s are visually basically identical, with the exception that 167.005s usually have “officially certified” on the dial. In terms of value they’re comparable I’d say. It sold for ~860€ including a croco strap, yours has an Omega beads of rice bracelet which, while not the correct style for the watch, also has a value that’s significantly more than the leather strap on mine. Serviced, I’d say roughly 1000€ is realistic, although you won’t struggle to find dealers trying to pass their examples on for even twice that.