straightline handstamp on partial folded letter to Chester Town, Maryland, matching "Paid" handstamp and manuscript "6" [d] rate reflecting the 2dwt rate converted to British pounds sterling, cover light wear and toning, very fine strike, according to Siskin one of four recorded uses of this postmark in private hands, the 2dwt rate reflects the 25% reduction in rates in April 1788 (ASCC $2,000)