Official corner cover “OFFICIAL BUSINESS / U.S.S. CHESTER / CARE OF POSTMASTER / NEW YORK, N.Y.” with printed notice “PENALTY FOR PRIVATE USE TO AVOID / PAYMENT
OF POSTAGE $300”, mailed free of charge from Greece to USA, franked with “U. S. S. CHESTER* SEP / 26 / 1930” machine slogan “ATHENS / GREECE” special military
postmark. VF and scarce.

NOTE: USS Chester (CL/CA-27), a Northampton-class cruiser, was the second ship of the United States Navy named after the city of Chester, Pensylvania. (9300 tons). Chester was launched on 3 July 1929 by the New York Shipbuilding Corporation, Camden, New Jersey, sponsored by Miss J. T. Blain; commissioned on 24 June 1930, Captain Arthur Fairfield in command; and reported to the Atlantic Fleet.
Chester cleared Newport, Rhode Island, on 13 August 1930 for an extensive European cruise. She visited Barcelona, Naples, Constantinople, Phaleron Bay, and Gibraltar before returning to Chester, Pennsylvania, for voyage repairs on 13 October. Originally classified as a light cruiser, CL-27, because of her thin armor, Chester was redesignated a heavy cruiser, CA-27, because of her 8-inch guns in accordance with the provisions of the London Naval
Treaty of 1930, effective 1 July 1931. Decommissioned 10 June 1946.