Just want to warn others who use USPS priority service. They provide the nice box and if it fits, it ships. I have sent about 30 boxes in the last couple months. 2 did not make there destination. Vanished. With bar code scanning I cant see how you "loose" packages. Then try to collect insurance. Near impossible. It's funny that these 2 items were both almost irreplaceable. A perfect 901 trans shift knob original and mint, and a oil thermostat for 69-71 cars with front cooler.
I have shipped UPS and Fed Ex since they were founded and never lost anything. 2 items in a couple months is crazy.
And if you have a claim, don't think your local post office will help you. It has to be done 100% on line, so you are dealing with a automated service. Can't deal with humans at any level.