11042 | 1987，R16 type（1982-3） stationery envelope sent from Chiaotowho Coal Mine Hunan to Shanghai（51.4）
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1987，R16 type（1982-3） stationery envelope sent from Chiaotowho Coal Mine Hunan to Shanghai（51.4），with“Chiao Er Ching Postal Agency Specialized Chop”red dollar cachet，nice condition，rare.
