(Champlain Transportation Co.) "B" (Boat), manuscript post marking and matching "18¾" rating for under 400 miles on folded letter datelined "Montreal Sunday August 31 1823" to Leicester Mass., carried by the Congress from Rouses Point to Whitehall; some edgewear and light toning, F.-V.F., a scarce early cross-border steamboat use. Estimate  $200 - 300. $0 (Image)