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Details
cover 1893 (23 May) envelope (trivial foxing) from Kewkiang to Shanghai, bearing 1892 Colours Changed 2c. green bisected vertically tied by "LOCAL POST/SHANGHAI" and crayon strokes, both in blue, the reverse showing "CUSTOMS/KIUKIANG" despatch c.d.s. in red partly overstruck by "CUSTOMS/SHANGHAI" c.d.s., also showing "SHANGHAI/LOCAL POST" c.d.s. in blue. An extremely rare and possibly unique usage of mail from Kewkiang sent via the Shangai Local Post. Photo
Further details
Note: There never was a Shanghai Local Post Agency at Kewkiang, and the Kewkiang Local Post did not open for another year after this cover was mailed