I know we had this discussion before but now have a pic. A six-bladed, pearl handle, Sheffield made congress pattern found in Lincoln's pocket the night of his assassination. Now resides in the library of congress. One can read a recreation of the entire day if so inclined.
http://www.loc.gov/exhibits/treasures/i ... lc0070.jpg

s-k
If you want to read about Lincoln's last day, the link is
http://members.aol.com/RVSNorton/Lincoln45.html