cover 1946 (24 Apr.) philatelic envelope to Shanghai bearing imperforate 5c. violet, 5c. blue, 10c. yellow-brown and 20c. vermilion with perforated 5c. blue tied by Paoying bilingual c.d.s., pair of $10 Postage Dues added and cancelled on arrival, fine. Photo
cover 1946 (24 Apr.) philatelic envelope to Shanghai bearing imperforate 5c. violet, 5c. blue, 10c. yellow-brown and 20c. vermilion with perforated 5c. blue tied by Paoying bilingual c.d.s., pair of $10 Postage Dues added and cancelled on arrival, fine. Photo

Details
cover 1946 (24 Apr.) philatelic envelope to Shanghai bearing imperforate 5c. violet, 5c. blue, 10c. yellow-brown and 20c. vermilion with perforated 5c. blue tied by Paoying bilingual c.d.s., pair of $10 Postage Dues added and cancelled on arrival, fine. Photo
Further details
During the third Civil War period mail was delivered freely, there are not many examples bearing Postage Dues