Lot
926 
San Francisco. June 20 (Cal.) (San Francisco), perfectly struck straight line with manuscript magenta date & matching "80" double rate on immaculate 1849 cover to New York, manuscript endorsement "Per Steamer Panama", Extremely Fine and choice, ex-Knapp, Nathan . Estimate $1,000 - 1,500.
POSSIBLY THE FINEST KNOWN EXAMPLE OF THIS FIRST DAY OF USAGE OF THE SAN FRANCISCO STRAIGHT LINE.
Realized: $1,050