Back in the days when the US military paid their soldiers in cash. The days of reporting for pay. These safes were kept in the Company HQ's usually chained to the floor or wall. The padlock was designed for locking ammunition bunker doors. I don't how early the design is but the newer ones have changlable keys. It does remind of the days of having to report for pay. All $96.00 US Dollars which was a lot of money back in the day. LOL!!