Sacramento, Cal., Mar 22. Clear strike of oval postmark (Williams SAC-2480) on 1850 cover to San Francisco, matching large "12½" rate handstamp and manuscript "Paid Postage $2n 12½ WmMS" in pencil with additional pen notation at lower left, edge wear and small cover tear at top, Very Fine, a lovely usage of the 12½¢ double letter rate, pictured in Letters of Gold. Estimate  $400 - 600. $0 (Image)