As is almost always the case, images would help a lot. Since the outer door is open, it should be possible to recover the combination on that lock. A good introduction to combination-lock construction and operation is http://www.crypto.com/papers/safelocks.pdf.
As for the inner door, hopefully that’s open too! If not, it could get rather costly. If open, you might be able to detach the lock and take it to a decent locksmith.
