cover franked with 1861 12 Black (69), faint "Silver Mountain Cal. Mar 9" double circle datestamp, endorsed "Via Steamer", red "New York Paid All Mar 30" transit, carried aboard Cunard's Siberia arriving Queenstown April 11, red "London Paid 12 Ap 69" datestamp ties adhesive, original contents, small faults along top edge, very fine use from a rare origin, ex-Needs