1c-10c Kansas-Nebraska (658-679). Complete set of 22 tied by Washington D.C. May 1, 1929 duplex cancels on two airmail
First Day Covers addressed to A. C. Roessler
VERY FINE. A DESIRABLE PAIR OF FIRST DAY COVERS WITH SETS OF THE KANSAS-NEBRASKA OVERPRINTS.
Ex Martin.
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E. 4,000-5,000