franked with four 4 fen surcharged revenue stamps used as Basic postage, all overprinted “Wanhsien,” tied by Paiyangping “38.6.17” cds, carried via Wanhsien and arriving Chungking on Jul 3, 1949. The franking of 16 fen correctly pays the domestic registered rate (4 fen letter rate plus 12 fen registration fee). The “Wanhsien” overprints represent a typical example of the early Silver Yuan period practice whereby a central post office applied its name to stamps prior to distribution to subordinate offices. Paiyangping, being a sub-office under Wanhsien, used these overprinted stamps for postal operations, clearly illustrating the supply-and-use structure within a single postal district and reflecting the practical functioning of regional postal control measures at the time. According to current records, this is the second earliest recorded cover bearing Szechwan local post office name overprints, of notable chronological importance. Covers clearly demonstrating the relationship between central overprinting and sub-office usage are scarce, making this an important item for the study of early Silver Yuan postal administration and overprint practices, with significant postal history and exhibition value.

franked on reverse with three 10 fen Silver Yuan surcharged revenue stamps (on Dah Tung flat plate issue), total 30 fen, each overprinted with black Sung-style “Ipin” post office name chop, tied by Ipin cds dated 49.7.29. The postage correctly pays the foreign aerogramme rate of 30 fen (valid from July 5 to Dec 11, 1949) . The franking comprises San Yi Printing Press Silver Yuan surcharges in red-brown on revenue stamps, further overprinted with the local post office name “Ipin,” representing a characteristic example of local overprint practice during the Silver Yuan postal period, reflecting the diversified stamp supply and regional postal control measures of the time. A long-distance airmail usage from inland Szechwan to Northern Europe, illustrating the functioning of international postal routes in the late 1949 transitional period. According to recorded data, this is the only known foreign aerogramme sent from a Szechwan local post office, an exceptional rarity of considerable importance for the study of Silver Yuan postal operations, local overprint system, and outbound postal history, and of significant exhibition value. Accompanied by a 2008 Experts & Consultants Limited certificate.

franked with five 4 fen Dr. SYS basic stamps overprinted in blue with the local post office name “Wukiachen,” tied by Shuanghechang cds and arriving Chungking on Aug 8, 1949. The total postage of 20 fen conforms to the domestic registered letter rate for the period Aug 1 to Dec 9, 1949. The adhesives bear the “Wukiachen” local overprint, yet were used at Shuanghechang, representing a cross–post office usage of locally overprinted stamps. Under normal regulations, such overprinted issues were restricted to use within the issuing post office or its designated postal district. However, following the abolition of the Gold Yuan currency in Aug 1949, these regional restrictions were lifted, rendering such overprints effectively “unnecessary overprint.” This cover clearly illustrates the transitional phase in which previously restricted local overprint stamps continued in practical use despite regulatory change. Examples combining “unnecessary overprint” status with cross-district usage are scarce, and this cover vividly documents the shift from strict regional control to freer circulation in the late Silver Yuan postal period, offering significant postal history and exhibition value.

franked with eight 4 fen Dr. SYS basic stamps, of which seven are overprinted in blue with “Sungkai” , tied by Hokenchang cds, and arriving Chungking on Aug 12, 1949. The correct inland double registered rate was 35 fen for the period Aug 1 to Dec 4, 1949; this cover bears 32 fen in postage, thus underpaid by 3 fen. The stamps used bear the “Sungkai” local overprint, yet were postally used at Hehkenchang, representing a cross–post office usage of overprinted issues from a different locality. Under regulations, such local overprints were intended for use only within the issuing post office or its designated postal district. This cover simultaneously demonstrates cross-district usage and underpaid postage, reflecting the practical flexibility and irregularities in postal operations during the transitional Silver Yuan period. Such covers combining both features are rare, and are of considerable importance for the study of late Silver Yuan postal administration, rate enforcement, and operational practices, offering significant postal history and exhibition value.

franked with two 10 fen Shensi airmail unit stamps and one 5 fen East Szechwan Silver Yuan stamp, paying a total of 25 fen, tied by Nancheng cds, and arriving Chungking on Oct 30, 1949. The franking correctly pays the double weight registered airmail rate of 25 fen for the period Aug 1 to Dec 6, 1949. Following the invalidation of the Gold Yuan in Aug 1949, restrictions on the use of stamps by postal district or local post office were no longer strictly enforced. On Sep 7, 1949, the Nationalist government relocated its capital to Chungking, making East Szechwan the location of the Directorate General of Posts (DGP). In the absence of sufficient central issues, East Szechwan Silver Yuan stamps were occasionally distributed and used in other postal districts. The East Szechwan Silver Yuan stamp on this cover represents such cross-district circulation, being used in Nancheng, Shensi, and illustrating the practical realities of stamp supply and postal administration during the transitional Silver Yuan period. Combining cross-district usage with a clearly documented inter-provincial airmail route (Nancheng - Chungking), this cover is, according to current records, the only example recorded, and is of considerable importance for the study of late Silver Yuan postal operations, stamp distribution, and systemic transition, with significant postal history and exhibition value.Accompanied by a 1998 the Royal Philatelic Society, London certificate.