Help with Mosler Cannonball - Yale time lock

[patrol]

Hi -- I was hoping to get some help with a cannonball safe I have - The safe is open right now, and there is a Yale Time lock... I don't know the combo though- and I was wondering, is that something a locksmith could set- as in, are the combinations of those safes settable, since it's open and we have access.? This is what it looks like. I'm hoping to use the safe to put some of my bitcoin in. I guess I'm asking, what would the process be to get this thing going again, based on not having the original combo- but being able to get into it