$1 United States Official Mail Stamp from 2006.  Scott O161 (eagle in dark blue background and microprint under background reads OFFICIALMAILUSA).  Mint Never Hinged with Original Gum.  Each pair of scanned images shows the face and reverse of 12 of the 20 stamps available.

Please view my other listings on eBay.  I have many other lots of stamps, plate blocks, sheets, and individual stamps listed for sale at very reasonable prices!