Suggestions On How To Resolve Postal Theft?

My last PCGS return was in a long medium flat rate box and it only had 1 blue box in it so tons of "free space" when the mailman delivered it it had a huge hole in the face of the box almost big enough for the blue box to fit through if it wasn't so long BUT just big enough for fingers to manipulate through. I promptly opened it before signing and the blue box and coins were intact. That was a couple K worth of coins and for a few seconds my heart was pounding. I bet it was just a mechanical hit or other box going through the cardboard due to the amount of void space.

I'm with Bob Levi on your situation. Friction should have kept that bill in place without the cardboard falling out too so I'm thinking a mechanical damage then theft. The damage "opened the door" so to speak for the theft to occur.

Hope it all works out celtic and I applaud you for giving him the chance to work it out. It should show the true character of this particular seller

Indeed; lesson learned.

Well I had a similar problem getting coins from the mint. I received a box that was sealed but had nothing in it. I took it back to the post office after I had opened it (next day). I spoke to the postmaster and told him what happened. I then called the mint and was issued a replacement at no cost after giving him my information about the post office and have never had a trouble since. This happened probably about 5 years ago.