Sinkiang Province Peking Martyr 112 variety as center stamp in a block of nine; CSS SK 152a re-entry position 115/200 from plate 3, accompanied by a 2007 CSS certificate (2 images)

Sinkiang Province Peking Martyr 112 variety as center stamp in a block of nine; CSS SK 152a re-entry position 115/200 from plate 3, accompanied by a 2007 CSS certificate (2 images)