Nappa City, Cal. (Napa). Two strikes of light April 5 cds tying 1851 1¢ type II + 3¢ dull red, irregular block of 3 on cover to Washington, D.C., cover docketed "1855", bottom 3¢ creased, Very Fine, certainly one of the earliest known 10¢ Transcontinental rate covers which became effective April 1, 1855. Scott No. 7+11  Estimate $100 - 150. $0 (Image)