(Tuolumne) Sonora, Cal., May 10 1852. Straight line postmark (upside down) (TUO-1350) on stampless folded letter to San Francisco with manuscript "5" rate, then forwarded to Baltimore, Md., with San Francisco cds 1 Sep and additional manuscript "10", Very Fine, only recorded example. Estimate  $500 - 750. $0 (Image)