The one on the left is an "inner door" key and there's at least a few small variations of it, but they are all very simple locks that keys can be made to fit real easy if a correct sized blank key is found.
The one on the right is the exterior door trap-lock as viewed from the inside of the box, the main key to open this door is on the other side and it becomes trapped in the lock once turned and the door is opened, it can only be removed by inserting a small narrow key in the key hole shown. The idea with this was to identify which key holder opened the box, most of these boxes have their main door keys in them permanently trapped since almost no one seems to sell the smaller keys or even has them.
With these being antiques, obviously, modern looking or "home made" keys just would not look right, so the issue is how does one find keys that fit the key holes and are correct in size/length/bit width etc in order to cut/file them to work?
There's a couple of other locks these have, but I don't have a photo handy at the moment, they used at least 4 different keys on these things! 5 if you count the spring winding key.
Here's a picture of what these are, the main door key can be seen in the door, and above that there's a round weather cover over the lock that keeps the small hinged swing-down door (which usually has glass in it) closed over the main door key
