I was a UPS slave for four years. They have their fair share of kleptos but metal in an envelope is not a good combination. You should be able to call 1800pickups and put in a claim. I am sure '77 insured it. Put in a claim either way. Did someone sign for it or was it left by the driver? Drivers are not supposed to leave damaged pkgs but most are lazy union abusing bums who want everyone else to do their jobs. Dont get wrong there are some good ones too. If you complain to the right people you will definitely be taken care of.