Lot
1755 
1887, 1¢ ultramarine, horizontal pair, tied by "Amherst, Mass., Mar 12, 1888" duplex cds's on cover to Washington D.C., with "American Eclipse Expedition to Japan, 1887, Professor David P. Todd, In Charge" corner card, Very Fine. Scott No. 212 Estimate $200 - 300.
David Peck Todd was a noted American astronomer and was the organizer and leader of a number of important astronomical expeditions throughout the world between 1878 and 1919.