J. Bamber & Co.'s Contra Costa Express, Paid, oval handstamped frank on 3¢ Star Die entire with manuscript "Warm Springs, July 23" (1861) alongside the indicia, addressed to San Francisco with boxed "Answer by…" Bamber handstamp., Very Fine, the nicer of two similar known covers from Warm Springs. Estimate  $150 - 200. $0 (Image)