Alta Express, Sacramento. Blue oval date stamp on two covers; 1851 3¢ Nesbitt entire to Downieville, black printed frank at top, other franked with 1857 3¢ dull red (piece out of top) tied by handstamp on cover to San Francisco, cover tears at top, F.-V.F. overall. Estimate  $200 - 300. $0 (Image)