2c Brown, 3c Ultramarine (113, 114).
2c straight edge, used with 3c pair and 30c Orange, F. Grill (100),
tied by quartered cork cancels and "San Francisco Cal. May 10" (1869)
duplex datestamp on buff cover to Stockholm, Sweden,
red "8" credit handstamp and matching New York transit backstamp, red "Verviers-Franco-Coeln" transit datestamp, receiving backstamps, blue crayon "f3" (sgr) Prussian Mail rate marking, cover repaired at bottom, otherwise Fine, extremely rare mixed-issue franking for double 19c Prussian Closed Mail rate to Sweden, on May 10, 1869, the day this was postmarked at San Francisco, the tracks of the Union Pacific joined those of the Central Pacific Railroad at Promontory, Utah, this cover was probably transported east on the newly completed transcontinental railroad, ex Mack
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