Your lock may be missing the fence (in green box) (may have been removed so that the safe could not be locked by accident)
in order to see what the combination is, turn the dial and watch the 3 wheels inside the safe lock so the notch (yellow with red circle around it) alights at 12 oclock on all 3 wheels, you will have to turn Left Right Left x times to accomplish the alignment of all 3 wheels.
