10832 | 1949（6.7） Registered cover from Tientsin to Shanghai，bearing North China People’s Post 40 Yuan on Sun Yat-sen（2）
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1949（6.7） Registered cover from Tientsin to Shanghai，bearing North China People’s Post 40 Yuan on Sun Yat-sen（2），obverse with slip“not delivered”，tied by Shanghai dater，unusual Liberation Area cover with such a slip.
