I had 1 of my SE/30s arrive at its destination with a broken bezel.  There was a hole in the box, too, so my guess is something poked through the box and smashed it.

I now buy those foam pool noodles, cut a 90 degree section out of them, then use them as foam bumpers along the edges of the computer.  I then fill the rest with packing peanuts.

So far, so good.  I've shipped them to Germany, China, and now Japan.

Hope I didn't just jinx myself.