cover 1898 (9 Apr.) envelope registered to Lowell, U.S.A. per "First Mail" (vertical fold at left) bearing 10c. on 30c. grey-green fourth printing [5] with 1891 20c. on 30c. grey-green with Chinese character cancelled by Hong Kong c.d.s., the reverse bears wafer seal of Burnie & Goddard and U.S. postal markings; an unusual franking.

Details
cover 1898 (9 Apr.) envelope registered to Lowell, U.S.A. per "First Mail" (vertical fold at left) bearing 10c. on 30c. grey-green fourth printing [5] with 1891 20c. on 30c. grey-green with Chinese character cancelled by Hong Kong c.d.s., the reverse bears wafer seal of Burnie & Goddard and U.S. postal markings; an unusual franking.