This full sheet of 50 mint never hinged stamps was issued on September 13, 1948, by the Northeastern Provinces of China during the final stages of Nationalist control, featuring a bold black surcharge of $8000 on the original 50 cent orange red Sun Yat-sen definitive. Printed by the Central Engraving & Printing Works (C.E.P.W.) using gravure on unwatermarked paper, this overprint was applied in response to hyperinflation during the late Chinese Civil War, adapting preexisting denominations to the soaring postal rates. The stamp features a formal portrait of Dr. Sun Yat-sen, framed in a classic ornamental style reflecting the national symbolism of the Republic of China. Measuring 23 x 27 mm with line perforation 14, this emergency issue is a part of the seventh definitive release in the Northeast series, catalogued as Michel CN-IM-NE 60, Scott CN-IM-NE 56, Yvert et Tellier CN-IM-NE 64, Stanley Gibbons CN-IM-NE 73, and China Stamp Society CN-IM NE68. The sheet reflects both the aesthetic restraint and economic urgency of China’s final inflationary phase prior to Communist consolidation. Condition Mint never hinged sheet of 50 with clean selvage, bright color, and sharp overprints. Estimate "$240 – 270".