1861 (Jul. 1) San Francisco Cal. to Guatemala via Panama, left straddle line pair, pos. 71-81R2, tied by two strikes of "San Francisco, Jul 1, 1861" cds on light yellow United States Marshal's Office, Northern District of California envelope addressed to Hon. E.O. Crosby, U.S. Minister, Guatemala in care Wm. Nelson Esq., Panama, black "4" reales due rating handstamp; reduced slightly at left, Very Fine. Estimate  $300 - 400. This cover is prepaid for the 20¢ West Coast rate (over 2,500 miles) per ½ ounce. The rate for under 2,500 miles was 10¢ per ½ ounce. $0 (Image)