(Solano) Fairfield, Cal., Augst 11th (1859). Manuscript postmark (SOL-990) on 10¢ green Nesbitt entire, to Washington D.C., "Overland via Los Angeles" route endorsement, "Pension Office" receiver, trivial corner fault, almost Very Fine, earliest known and only manuscript cover, only 1st period cover. Estimate  $300 - 400. $0 (Image)