1864 (May 1) Shanghai, China to South Boston, Mass., blue cover endorsed "Via Marseilles" with light strike of red "Shanghae Paid MY 5 46" origin datestamp (the year digits are incorrectly set), reverse with blue Shanghae (5.5) and Hong Kong (5.10) transits, red crayon "2/0" rating, red London Paid (6.30) transit with "21/Cents" credit to U.S., perfect strike of red "Boston Am Pkt. Paid Jul 14" exchange cds, F.-V.F., An unusual prepaid use with the Shanghai Paid datestamp having the year date set incorrectly. Estimate  $300 - 400. $0 (Image)