Harbin 1923 + 1945 Rare pair of Covers

1923 China stamp on cover to Germany postmarks Harbin 4.7.23

The agreement to transfer Far East Republic to Soviet control was not reached until 31.5.24 and confirmed in Moukden 20.9.24

This cover shows that a Russian Postal Agency operated in Harbin before this.

The 1945 Harbin cover is dated 29.9.45 during the Soviet Occupation 40 days into the Occupation. Harbin returned to Chinese control in April 1946 and became the first Chinese City controlled by the communists.