Baltimore, March. 21, straightline postmark and manuscript "Sh 4.16" rating on folded letter datelined "Rotterdam 28th November 1789" to Philadelphia Pa., manuscript "Recd a forwd Balt. 21 March 1790" forwarder's endorsement on flap, manuscript "2/2" local currency rating, F.-V.F. Estimate  $200 - 300. $0 (Image)