Adams & Co.'s, Express, Sacramento. Exceptional strike of red dotted oval handstamp on folded letter to San Francisco, red "Paid" straight line handstamp, letter datelined "Sac City, Dec 19, 1851", Extremely Fine, one of the earliest usage of this oval handstamp. Estimate  $300 - 400. Adams & Co. expanded to Sacramento when it bought Freeman's Express on November 14th, 1851. $0 (Image)