Dennis, Thats a great looking lock, I’ve never seen one like it. Just by looking at your 2 pics, I would venture a guess that once it was opened ,a person could take a spanner wrench and insert it into the holes on the back and remove the back cover. This,I would think allow a person to change the combination. You are in possession of a very rare lock indeed. If you have lots of time on your hands,You ought to try going through all the possible 4 diget combinations to see if you could open it.Value is wide open,I would venture anywhere from $100 to 4 figures. :shock: Good luck, Mark
