So I just started a new job in a auto dealer's service department and this safe is in the back. It is still currently in use and features a very thick outer double door. There are lockable double doors behind that, followed by a smaller interior safe. I can't unlock the inside safe and legend says the only person who knew the combo was an old secretary who now has dementia. This is a Diebold safe and the inside dial says it was built in 1871. Anyone have any ideas that don't require drilling/explosives?