(Solano) Benicia, Cal, April 29, ca 1850 (Pre-Statehood), red straight line postmark (Williams SOL-90) on folded letter to San Francisco with manuscript "12½ " for Pacific coast rate during 40¢ rate period, Extremely Fine, a classic California rarity and the finest known example of this rare straight line postmark, ex-Tatham. Estimate  $2,000 - 3,000. THIS CANCEL WAS ONLY A TEMPORARY CANCELLER KNOWN USED FOR 6 MONTHS UNTIL THE FIRST CDS ARRIVED BY MAY 1850. ONE OF THE FINEST KNOWN OF THE APPROXIMATELY 6 RECORDED. $0 (Image)