United States Mail Boats
cover 1926-35, a collection of "U.S.T.P. SEA POST" covers (7 and front) struck with the special duplex for different ships going either east or west, also examples of U.S. military ship cancels connected with Hong Kong (5)
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cover 1926-35, a collection of "U.S.T.P. SEA POST" covers (7 and front) struck with the special duplex for different ships going either east or west, also examples of U.S. military ship cancels connected with Hong Kong (5)