Via Tehuantepec. Manuscript route endorsement on cover to Nachez, Mississippi, franked with 1857, 10¢ green, type III & tied by central strike of "San Francisco, Cal., Dec 20, 1858" cds (SAF-540); cover with expertly restored reduction at left and some edge wear, Very Fine appearance, a rare route operating only between Oct 1, 1858 and Sept 27, 1859 handling very little mail, letters for carriage over the route had to have the routing endorsement. Scott No. 33  Estimate $500 - 750. $0 (Image)