Scott #LO6, the 1875 reprint of the 1851 USPO despatch carrier stamp.  Typical centering, no gum as issued.  Scissors-cut perfs at top right.

Scott value is $175 (note that Scott states, "No. LO6 is valued with the perfs cutting slightly into the design").  1-cent start!

Bid with confidence, APS member since 1979.