1861 (Aug. 7) San Francisco, Cal. to Mauzé, France via Central Overland Stage, blue folded letter endorsed "Via Overland", San Francisco cds and blue crayon "15" unpaid letter rating, "New York '9' Aug 31" exchange debit cds, carried by NGL Line Bremen from New York Aug. 31 to Southampton arriving Sep. 12, red Calais (9.13) entry cds with "8" decimes due h.s., Mauzé (9.14) arrival backstamp, Very Fine, a scarce transatlantic use via Central Overland Stage from California. Estimate  $200 - 300. Letter traveled overland across the U.S. by an early Central Overland stage, departing San Francisco and arriving at St. Louis, then by train to New York. The shift from the Butterfield Overland route (southern route) to the Central Overland route took place on July 1, 1861. San Francisco marked the 15¢ unpaid letter rate in blue crayon. $0 (Image)