A couple of comments on shipping. I ship heavy/fragile vintage radios and am always looking for ways to make the process more affordable.
I've started using pirateship.com with great success. They "resell" UPS (and others) at volume pricing similar to what Ebay provides. You feed the website addresses, sizes and weights, print the label and take it to the UPS store, where you'll get a receipt. I have saved a LOT of money compared to the UPS online portal itself.
Packaging: Removing the fragile bits (the spring hanger,etc) and double boxing is a key. The inner box can be tight fitting , with the outer one providing 3-4" of clearance for bubble wrap/ styrofoam sheets, or the like for a buffer. Used Amazon bags are cheap "bubble wrap".
I've shipped a bunch of 50's and earlier era radios and the double box routine gets them there safely. I prefer UPS over USPS, as life is short enough without waiting for USPS parcel delivery.
Give pirateship.com a try.