Can't tell much (if anything) without the number inside the caseback. It appears you are missing the crystal, and the dial is quite damaged... it identifies the watch as a Globemaster, and if it truly is, you have a rare find but it's in deplorable condition.
I have found a posting on here of the exact same watch, so I believe yours to be authentic. It's a dirty darn shame that the crystal is gone, it might have protected the dial better.
I'm seeing two choices for you, and it's up to you which you want to pursue. It is all original now or close to it, so you could get a new crystal and a movement service and wear it as is... or you could send it to the factory in Bienne, where they will make it look like new, including a factory dial refinish, where it is cleaned off, repainted, and re-inked.
Clearly the less-intrusive alternative is also the lowest cost. Sending it to Bienne might well cost $2000 (that is not a typo).
Of course you can do the less-intrusive cleaning first, and make up your mind about a complete restoration at another time.