Stampless Cover Balance, 1810-70's. 10 covers; early Washington D.C. postmarks including war rate usage, railroad including 1840 straight line and scarce N. Haven & Greenfield R.R. postmark (Towle 35-E-1, rated VI), few transatlantics including1864 San Francisco to France and U.S. Note integral on U.S.S. Nantasket ship letter (no photo). Estimate  $300 - 400. $0