Issued on June 16, 1949, by the People's Liberation Army postal administration in Eastern Liberated Areas, this full sheet of 25 stamps features a design with a steam locomotive and a traditional post runner, symbolizing the transformation of communication and transportation during the Chinese Civil War. Printed by offset in bright orange-red without gum, the stamps are perforated line 14 and measure 26 x 23 mm. This issue belongs to the definitive "Steam Train and Post Runner" series and was valid until August 31, 1950. The sheet, in mint never hinged (MNH) condition, is evenly margined and sharply printed, representing an iconic transitional piece from regional revolutionary posts to unified PRC postal control. Thematically focused on railways, national development, and socialist iconography, the stamps reflect early Communist propaganda celebrating infrastructure. Scott 5L70a. Estimate "$120 – 150"