Lot
3154 
Fort McKinney, W.T., two covers in purple and black, May 19th 1879 purple cds duplexed with four-ring cancel ties 3¢ green (147), faulty at top, on cover to Newburgh N.Y., and black Jun 15th 1880 cds duplexed with four-ring cancel ties 3¢ green (184) on cover to Middleborough Mass., Fine and scarce pair. Estimate $300 - 400.