Great Britain. (France). 1872. Registered and Charged blue envelope addressed to France bearing SG 122, 6d pale chestnut (plate 11) tied by 'Bute Docks/ D57' duplex 'My 23 72' with oval Registered/ Cardiff and oval 'Registered/ London' transit on face in red 'My 23', circular 'PD' with hand-struck 'CHARGE' and framed accountancy on reverse with 'Postes Calais/ Paris' wax seals in red (2), French entry cachet and Nantes arrival on reverse.
Scarce single sixpence single franking sent registered and Charged to France.