Republic of China 5 Fen Sinkiang Overprint

China · 1941 · 5¢

The stamp features a portrait of Sun Yat-sen, the founding father of the Republic of China, with Chinese characters for 'Republic of China Post' and '5 fen'. It has a black overprint 'For use in Sinkiang Province only'.

The stamp was issued in 1941 during the Sino-Japanese War (part of WWII). The 'For use in Sinkiang Province only' overprint indicates a specific regional postal regulation, likely due to wartime conditions or administrative changes in the remote Sinkiang province.