(North West Territory) Marietta, 29 May, manuscript postmark on 1800 folded letter to Norwich, Conn., matching manuscript "25" rate for over 450 miles, with letter regarding the water height in the river preventing shipments from arriving, Very Fine, a choice example of this scarce Northwest Territory postmark. ASCC $3,500. ASCC  Estimate $750 - 1,000. $0 (Image)