China: 1857 (Dec 7) Entire letter from Shanghai to Cadiz (Spain), privately carr
China
1857 (Dec 7) Entire letter from Shanghai to Cadiz (Spain), privately carried to Gibraltar, where it was handled by the agent James Speed with corresponding octagonal "FORWARDED/BY/JAs. SPEED" marking in blue, delivered to the Spanish mail and posted at the bordering town of San Roque, with application of...