Placerville, Cal. (El Dorado). Double circle postmark (Williams ELD-2920) with manuscript date & matching "10" rate handstamp on 1851 folded cover to Illinois, cover with interesting mining & Indian content, Very Fine, used 4 days after the rate change from 40¢ to 10¢ unpaid (July 1, 1851), ex Pearce, Walske. Estimate  $500 - 750. $0 (Image)