Hints for getting into the safe follow. If you haven’t found the safe, don’t read further. If you think you may have found the safe but it’s not called a safe, you haven’t found the safe.
1: Search the office properly.
2: Look under stuff.
3: What you find may not look like a number, but it is.
4: Turn it around to make it into a number.
5: An old kind of number.