(El Dorado) Unionville, Cal., Aug. 15. 1861. Neat manuscript postmark (ELD-3990) on lemon cover to Placerville franked with manuscript cancelled 3¢ dull red, flap missing & small piece replaced at top just slightly affecting the "U" of "Unionville", still Very Fine, the only recorded example from this 1 year town, ex-Jessup. Estimate  $750 - 1,000. $0 (Image)