This high-denomination 100 Yuan green stamp from China (Northeastern Provinces issue) features the engraved portrait of Dr. Sun Yat-sen, revered as the founding father of the Republic of China. Issued during the turbulent regional currency period, it carries the distinctive “Northeastern Provinces Use Only” overprint at bottom. The rich green shade, bold denomination panels, and classic Sun Yat-sen frame make it a sought-after definitive for specialists of Republic-era printings and regional overprints. A key value for collectors studying plate varieties, shade differences, and wartime postal economics.