I bought two of these padlocks to cause me to open them using techniques available in this book: [.....] (That I do not particularly recommend by the way) I found out by removing a that there was actually a very sensitive point in the back, protected only by a thin tin thickness that gives access to the locking mechanism and allows the opening (destructive the coup) in less than a minute. If you miss this "detail" the lock is correct and solid ...
