Hi Mike,
Sorry for the delay in responding. I did look and don't have a pic anymore. I usually photograph the packing of all my delicate shipments in case there is an issue in transit. Seems that pic was purged at some point.
What I do is build a frame that fits perfectly inside a box. The frame has a solid bottom that I actually mount the arm to and a solid top. I have some of that very firm pink sheet insulation left over that works perfectly. So, I cut two sheets to the length and width dimensions of the box. Then I cut a bunch of 1.5" X 1.5" bars that make up the frame. I cut a hole into the first sheet for the arm. Then I duct tape bars to the underside to lift up this sheet and allow room for the bottom half of the mounting screw, cable, etc. Then using more bars, I build up from the corners and attach the second sheet as a top to the frame. This frame then slides into the box. The idea is that no part of the arm touches the box and the only part of the arm that touches the frame is the mount. All the delicate pieces like the arm lift and headshell are completely suspended within the frame. Of course, all loose parts are removed and the arm is tied to the arm rest so it can't come loose. I usually use a piece of soft foam with a hole in it, through which I stick the armtube for added support. While building the frame, try to think like this 'if the box is dropped on this corner what would happen?' and support accordingly. It will take you at least an hour but isn't your peice of mind worth it? Hope this helps!