Langton's Pioneer Express, Downieville. Blue oval handstamp tying 1857, 3¢ dull red (s.e. at right) on money letter cover to San Francisco, Cal., manuscript Val. $5-, Pa 50 notation at top and portion of wax seal at bottom showing Langton seal imprint, black company frank at top; cover thinning slightly in address panel from partial removal of wax seal, Very Fine, an attractive and scarce money letter usage. Scott No. 25  Estimate $750 - 1,000. $0 (Image)