I totally agree with Tom (lugerdoc)!! The solution is to wrap the pistol in a plastic baggie before you put it in the paper box. If you want to get a bit more fancy, you could use Bob Spatola's Boxes:
Robert Spatola
Robert's Arms Specilties
Route 2, Box 773
Harpers Ferry, WV 25425-9428
rspatola@earthlink.net
304-728-4472
www.protectagun.com
They fit the Luger a little bit better, so you can cram more pistols in the same space. You still have to use the plastic bags!! I have used these for years!!