Lot 31941860 (Jun. 8) London, England to Philadelphia Pa., gray folded cover with red "Lombard-Street, JU 8 '60" origin cds bearing G.B. 6d purple and 1s green for 1s packet plus 6d registry fee, red "Registered, London, 8 Jun 60" oval and matching "Registered" crown handstamp with red manuscript "5/6" credit to U.S. for 5¢ inland and 6¢ registered, endorsed "p Asia, Registered", carried by Cunard Asia from Liverpool Jun. 9th to New York arriving Jun. 21st, red "Phila. Br. Pkt. '24' Paid" exchange cds overstrikes London registered oval.
Estimate $200 - 300.
Additional articles effective 1 May 1856 allowed exchange of registered letters, provided that registration was fully prepaid, and that the receiving country would bear no liability for loss. Each country was to credit the other with half of their registration fee.