"Lincoln & Davis in 5 Rounds, 2nd Round" from the Champion Prize Envelope series, ornate full-back patriotic cover depicting a fight between Abraham Lincoln and Confederate President Jefferson Davis, surrounded by soldiers and political leaders, with the Capitol building in the background, Tingley imprint at bottom, reverse franked with 3c rose, tied by black grid cancel and postmarked with "Princeton NJ / Oct / 14" c.d.s., to Oxford, New York, the odd unobtrusive tone spot, reverse with some small adhesion marks from prior mounting, not detracting from the exceptional appeal of this rare Union patriotic. (Weiss AL-193, Walcott L-164).  Only one complete set of used covers of this series has been recorded, with even individual used examples rarely offered.  An important Lincoln cover.