Lot
759 
Stockton, Cal., Apr 28 / 80, large cds with integral rate on folded letter sheet (no contents) to New Lisbon, New York, "via Panama" sender's directive, undated but necessarily an 1850 use given the postmark type, bleach spots, short edge tear, F.-V.F., the only recorded example of this postmark type showing the 80¢ double rate. Estimate $300 - 400.