Lot 638
638
unused Block of Four First Printing, November 1937: Pale reddish purple and black on red, a superb upper left corner plate block of four with full sheet margins showing FF 1Ai, 1B and 2i; fine and fresh mint. Photo
unused Block of Four First Printing, November 1937: Pale reddish purple and black on red, a superb upper left corner plate block of four with full sheet margins showing FF 1Ai, 1B and 2i; fine and fresh mint. Photo

Details
unused Block of Four First Printing, November 1937: Pale reddish purple and black on red, a superb upper left corner plate block of four with full sheet margins showing FF 1Ai, 1B and 2i; fine and fresh mint. Photo