R2094, Revenue Stamp Sheet of Three Regions (Sinkiang), 1948, 50 Unit.
Please refer the picture. The sheet with one piece tax stamp, Blue, the face value is 50 unit local currency. Issued in 1948.
"Three Regions" is a semi-independent country in the west part of Xingjiang (Sinkiang) during 1944 to 1951. In China currently, it is called "Three Regions Revolution Period".