franked with five Kwangtung Silver Yuan stamps of 1 fen each, totaling 5 fen, tied by Amoy cds dated 49.09.14. The franking correctly pays the domestic letter rate of 5 fen. The adhesives, Kwangtung Silver Yuan issues, were used outside their original postal district in Fukien, representing a cross-district usage. Following the invalidation of the Gold Yuan in Aug 1949, restrictions on regional stamp usage were no longer strictly enforced; combined with uneven stamp supply, Silver Yuan stamps from other districts circulated and were accepted for use elsewhere. This cover is a clear example of Kwangtung Silver Yuan stamps used in Fukien. The cover is a commercial envelope of the Standard-Vacuum Oil Company, showing the coastal postal route from Amoy to Swatow, and combining cross-district usage with commercial correspondence. According to current records, such cross-district usages of Kwangtung Silver Yuan stamps are extremely rare, with only seven examples recorded, making this a significant item for the study of Silver Yuan period stamp circulation and the transition of postal district regulations.

bearing thirteen Dr. SYS Gold Yuan stamps and additionally franked with one Shanghai postage meter label (Hu Type 4), tied by Shanghai cds. The total postage of Gold Yuan 189 conforms to the contemporary international airmail registered rate, comprising basic postage, registration with return receipt, and airmail fees. Dispatched one day after the PLA’s successful crossing of the Yangtze River on Apr 21, 1949, this cover originates from a period of rapid Gold Yuan hyperinflation and sharply rising postal rates. Owing to a shortage of postage stamps, the Shanghai Post Office supplemented franking with postage meter labels. The meter label was produced by the only operational franking machine in Shanghai at the time, designated “Hu (4),” representing a genuine mixed franking usage of Gold Yuan stamps and a postage meter label. Such covers vividly reflect the financial turmoil and adaptive postal practices of the period, and rank among the latest recorded examples of mixed Gold Yuan stamp and postage meter label usage. Of significant importance for the study of Shanghai postal operations in 1949 and the early application of postage meter systems, with strong postal history and exhibition value.

bearing a single Shanghai postage meter label (Hu Type 4) with the value of Gold Yuan 3,600,000, tied by Shanghai cds, routed via San Francisco (May 26, 1949) and arriving Ann Arbor on May 27, 1949. The postage, equivalent to 60 Silver Yuan fen, correctly pays the 10g international registered airmail rate for the period Apr 29 to May 27, 1949. Mailed during the Battle of Shanghai (PLA general offensive commenced on May 15, 1949), when despite intense warfare and social disruption, postal services remarkably continued to handle outbound registered airmail. Amid severe Gold Yuan hyperinflation, rapidly changing postal rates, and acute stamp shortages, postage meter labels were employed to meet high franking requirements. A fine single-franking usage of a Gold Yuan postage meter label on foreign registered airmail, showing a clear Shanghai - San Francisco - Ann Arbor route with complete arrival markings. An important postal history item illustrating wartime postal operations in Shanghai, extreme inflation, and the rapid transformation of postal rate systems in 1949, of significant exhibition and research value.

produced by the experimental “Chu (I)” franking machine, comprising 1 fen and 2 fen denominations, each struck with double-ring bilingual “貴陽 KWEIYANG” trial datestamps. These labels were printed by the early British-made “Chu 1” franking machine using specially supplied security paper from the General Directorate of Posts, representing testing materials from the initial establishment period of the postage meter system. This example, showing low denominations (1 fen and 2 fen), reflects the early implementation and experimental phase of the Silver Yuan postal system, with the “中華郵政” underprint paper being particularly characteristic of the earliest stage. Such trial proofs are scarce, offering significant postal history and exhibition value for the study of the origins of China’s postage meter system, equipment distribution, and operational practices across different postal districts.

bearing a single 18 fen postage meter label produced by the “Lan (I)” franking machine, cancelledby Lanchow cds, transiting Chungking on Jun 11, 1949 and arriving Hsiaolungkan on Jun 12, 1949. The franking correctly pays the domestic airmail registered rate of 18c (4c domestic letter rate + 6c airmail fee + 8c registration fee). The 8c registration fee represents a special rate applicable to the Kansu postal district, whereas the standard registration fee in other Nationalist-controlled areas at the time was 12c, demonstrating a clear regional rate disparity. Covers bearing this provisional 8c registration fee are extremely rare, with only three recorded examples, all used within the short period from Jun 8 to Jun 16, 1949. This example, bearing a Lanchow-issued postage meter stamp, represents an early usage from the Northwestern postal district, and illustrates a typical inland routing via Chungking. At the time, the postage meter system was still in its initial stage of implementation, with limited equipment and material distribution across different postal regions, resulting in distinct regional characteristics in usage. The present cover clearly shows dispatch, transit, and arrival markings, with a well-defined route, and a rate structure that directly reflects the special operational conditions of the local postal system, offering significant postal history and exhibition value.