Lot 50446 – China, Local Post Shanghai – 1866 12ca, an impressive

China, Local Post Shanghai – 1866 12ca, an impressive master negative cliché on film, produced in white, one of three known matrices or clichés and one of four known reproductions of any Shanghai Local Post by Sperati, these being all the items known for his territory; a unique negative cliché on film after the matrix, and an evidence of the attempt to reproduce Chinese philately.