Rhodes & Lusk Express, Shasta & San Francisco, blue oval within double-line oval handstamped express company marking on Oct. 1852 blue folded letter from Mail State Office at Sacramento to Quartermaster's Dept. in Cottonwood Cal., ms. "F" (presumably for "free"), considerable foxing at edges with two corners partly worn away, nice strike of marking, fine and extremely rare, ex Pearce, Haas