1937 Insured registered envelope addressed to Milan Italy endorsed ( " Assiculata L100-Cento - Valore in Sterline: Una") Franked Great Britain KGV 6d and an overprinted KGV1 1 1/2d adhesive paying the 7 1/2d charge (2 1/2d per 1oz and 5d compensation up to £12. Tied oval 'REGISTERED BRITISH P.O. TANGIER' d/s '7 SE 37' Black/Red 'Insured' label. Transit and receiving cancellations on the reverse.