In the beginning there was the ancient abacus, then came the adding machine, then came the computer. Before the memory stick the CD the 6&4” storage disk there was the paper Key Card or punch card. A basic program would fill a shoe box. Programs had to be protected had to be filed, what better way then to store them in locking steel boxes. Gone are the punch cards nonetheless the storage box has survived as a legacy to man’s ever changing technology. If you collect computers and computer stuff then this is a for sure item for you.there is no key.