Lot
791 
San Francisco Cal., 13 Aug, red cds and black "Ship 6" clamshell due handstamp on gray folded letter datelined "Sydney, 31st March 1851" to San Francisco Cal., endorsed per "Robert Borone" at top, clean and Very Fine, ex-Polland. Estimate $400 - 600.
ONE OF ONLY TWO RECORDED EXAMPLES OF RED SAN FRANCISCO CDS COMBINATION WITH BLACK CLAMSHELL DUE HANDSTAMP.
Written up in Western Express by the late Scott Polland.