1860 (Mar. 26) San Francisco Cal. to Fonthill, Canada West, 3¢ red on buff entire (U10) bearing 3¢ dull red (26) strip of three and single, all tied by two strikes of "San Francisco Cal. Mar 26, 1860" cds to Fonthill, Canada West, endorsed "Via Overland Mail", red "United States / Paid 6d" two-line exchange handstamp, red St. Catherines (4.21) and Fonthill (4.23) arrival backstamps; central file fold creases middle 3¢; partial flap, F.-V.F., a scarce use at the 15¢ West Coast cross-border rate, ex-DeVolpi (light red handstamp). Estimate  $300 - 400. $0 (Image)