Lot# 9101

used on the Kokiu – Pishihchai railway section in Yunnan, dated 1949-08-07 (cds 49.08.07) and 1949-08-21 (cds 49.08.21), corresponding respectively to Train No. 2 (Pishihchai to Kokiu) and Train No. 1 (Kokiu to Pishihchai). This group clearly demonstrates the bidirectional operation of the Train Post Office service along the Kokiu - Pishihchai sector of the Yunnan - Indochina Railway. During the Silver Yuan period, under wartime conditions, railway transport was largely requisitioned for military purposes, and civilian mail carriage was extremely limited, rendering Train Post Office mail and related cancellations very scarce. The present pair, representing both directions of service, is particularly rare and constitutes an important postal history item for the study of railway mail operations, route organization, and postal practices in Southwest China during the immediate post-war period.