(Hudson River Route 809) Hudson Riv. Mail, N.Y., Mar 30, bold strike of red cds on blue misdated 1848 folded cover to Poughkeepsie, N.Y., bearing 1847, 5¢ dark brown, four margins, cancelled by blue manuscript "X" and tied by cds, matching red "5" rating handstamp at right, docketed "Recd 31st March 1847" with year date error, Very Fine, this is the earliest reported use of the Hudson River Mail marking in the Alexander census, ex-Rose, Mirsky. Scott No. 1a. Estimate  $400 - 600. $0 (Image)