Todd & Co. Express, clear strike of small shield handstamp (TOC-100) on cover carried to San Francisco, placed in the U.S. mails where it received a light red "San Francisco, Cal/2" integral rate cds (SAF-400) for drop rate, F.-V.F., the drop rate townmark is very rare used only from August to October of 1850. Estimate  $200 - 300. $0 (Image)