While there is a 70 pound limit that would eliminate some of these items from consideration, Registered Mail can have insurance for up to $25,000with no issues. The items are passed from hand to hand in the Post Office with each person that handles the piece personally responsible. Those items do not go through the regular mail in any fashion. For a higher fee, armed guards are used. It's an archaic system that has never really needed an update. That's because it works.
The Hope Diamond went to the Smithsonian via Registered Mail.
I'm just sayin'...
The Hope Diamond went to the Smithsonian via Registered Mail.
I'm just sayin'...