Sinkiang 194-195 and varieties, CSS SK271-72 and Sk 271a and Sk 272a with surcharge inverted, on native paper with lines, Wm. E. Jones collection

Sinkiang 194-195 and varieties, CSS SK271-72 and Sk 271a and Sk 272a with surcharge inverted, on native paper with lines, Wm. E. Jones collection