red datestamp with matching "20.3" handstamp on folded letter from Manchester, England to Philadelphia, endorsed "By Steamer from Liverpool", carried by Cunard's Columbia which broke a shaft in transit 450 miles out from Halifax and had to proceed under canvas the remainder of the voyage, mail was carried to Boston by Unicorn of the Cunard Quebec- Pictou feeder service, arriving March 27, very fine, ex-White