1962, 4¢ Dag Hammarskjold, Yellow Inverted, Subtype II showing the white strip at left, tied by "New York, N.Y., Oct 23, 1962" First Day of Issue machine cancel on uncacheted cover, Extremely Fine, an extremely rare example of The Original 1962, 4¢ Dag Hammarskjold, Yellow Inverted on a First Day Cover and Believed to be the Only Known FDC Usage of the Rarer Subtype II Variety; with 2010 P.F. certificate. Scott No. 1203a  Estimate $3,000 - 4,000. The subtype II examples came from only the first vertical row of the left pane. This first day cover was a recent discovery and has never been offered on the market. $0 (Image)