Lot
28 
(Butterfield Route) 1860 (c., Jun) Biddeford Me. to San Francisco Cal., cover bearing two 10¢ green (35) singles, different shades, tied by "Biddeford Me. Jun" cds, manuscript "Overland Mail Via St. Louis" directive at top; reduced slightly at left; right stamp minor flaw at top left, Very Fine and rare double-rate Butterfield cover, ex-Kramer. Scott No. 35 Estimate $500 - 750.
There are only 12 recorded east to west Butterfield covers, this is the only recorded double-rate example.
Realized: $550