1861 (Aug. 7) Boston Mass. to Calcutta, India, blue folded cover bearing 5¢ brown, type II (30A) tied by "Paid" in grid cancel for the 5¢ British open mail rate, "Boston Br. Pkt. Aug 7" exchange backstamp, carried by Cunard Line Arabia from Boston Aug. 7th to Queenstown arriving Aug. 17th, red London (8.19) backstamp transit and "1/7" 1s7d debit rating, reverse with Bombay (9.9) and Calcutta (9.21) backstamps, manuscript "13½ A" due rating, Very Fine. Scott Nos. 30A  Estimate $400 - 600. $0 (Image)