I felt your pain when I was handed a second-hand jiffy bag by the postie. It wasn't even a bubblewrap lined one - it was the kind with old paper bits as the "stuffing".
Inside, was an early bit of Studio glass, possibly RCA, with a lot
more damage than it started its journey with.
On the other hand, I'd given a friend an old plate with some food I'd made for her journey on it. It was an OLD one, no longer part of any set, I didn't want it back.
But she posted it back to me in a (new, bubblewrap lined) jiffy bag anyway. It arrived intact.
That is a real disaster, charliepedro. A crying shame. What a waste of a lovely bit of glass.