Los-Nr. 2300

1874, 1 r. violet used on entire letter originating from London, franked by Great Britain 1873, 3 d. rose, plate 15, tied by 'LONDON E.C OC 14 74' duplex cancellation addressed to Ainhoa (France) where to cover was re-addressed, additionally franked with the Carlist 1 r. stamp and posted to Santesteban, Navarra, various transit markings on reverse. Exceedingly rare Carlist post combination cover with a British stamp, only a few known to exist. EXFIMA certificate (1977) and signed A. Roig (Edifil-no.158+GB Michel-no. 41)