Lot
942 
Detroit "Steamboat Due 2 Cts.", oval rating handstamp on circa 1862 orange cover bearing 3¢ rose (65) tied by four-ring cancel, matching "Detroit, Mich, May 11" double-circle to Haddam Conn.; top edge tear, Very Fine and scarce, Treated as a ship letter with 2¢ added to the prepaid 3¢ letter rate.. Estimate $200 - 300.