China 1932 North West Scientific Expedition set of 4 to 10c deep blue in lower marginal horizontal strips of 3 with imprint and plate number, SG406/09.
A fine set of marginal strips of 3, each fine used by two part Peiping circular date stamps.
Most attractive and scarce, with used examples in strips of three exceptionally rare.
Of the 25,000 sets printed, 20,500 were sold at $5 each to finance the expedition of Dr. Sven Hedin. The Sino-Swedish Expedition was a bilateral Chinese-Swedish expedition, led by Sven Hedlin, which carried out scientific research in north and northwest China between 1927–1935.
