This what the postcard Descriptions says:
Excessively rare A.L.S. "Jack" on a postcard with his last name "Phillips" incorporated in the address area, to his sister "Miss E. Phillips" in England, Roscov, Sep. 25, 1911, in full: "Just leaving for home. Hope to arrive London tomorrow Tues. eve. weather fine. Love Jack". Light soiling, else very good. Phillips is considered one of the few heroes in the Titanic's crew.
This postcard was written only a few months before he boarded the Titanic