This 1949 tax stamp, originally issued with a face value of 50 Chinese dollars, was revalued to 300 dollars by means of a bold red overprint as part of a transitional series where fiscal stamps were repurposed for definitive postal use. Printed in blue using lithography, the design incorporates symbols of national modernization including an aircraft, steam locomotive, and passenger ship, representing China’s post-war aspirations toward industrial and infrastructural recovery. Issued without gum and showing variable perforation typical for late 1940s Chinese emergency printings, the stamp was released in January 1949 amid severe inflation and monetary reform. The overprint was applied to extend the usability of existing stock during a period of governmental and postal restructuring. This mint never hinged block of six is well preserved, with strong impression, full margins, and vibrant color. Cataloged as Scott IM928, Michel CN-IM 991b, Stanley Gibbons CN-IM 1133, and China Stamp Society CN-IM 1332, this issue reflects the dual fiscal and postal roles undertaken by the Republic’s stamp program in a time of national crisis. Estimate "$95 – 120"