I am the sender. Yes that was the tracking number. I was told that an item may not fit into a PO box and it is returned. I was also told that the recipient should pick up items that are PO box items when they are overflow or not delivered. I hope so because I can't initiate a redelivery according to USPS.
Thanks for your work
Your item was delivered at 7:54 am on August 05, 2011 in PHILADELPHIA, PA 19176 to PRUDENTIAL EXPRESS . The item was signed for by L THOMAS.
Very often, when something doesn't fit into a P.O. Box, it is held by the business where the box is located, whether in a U.S. Post Office or a private business.
I hope your recipient received the item.