1899 Enforcement of Endorsement
for the Special Rate to the U.S.

1899 AUGUST 25: MANILA to WISCONSIN
Marked "Ships Letter" at upper left corner. 
Franked with 2c "PHILIPPINES" issue, subjected to 6c Postage Dues
for 3c short- paid on 5f civilian rate to the U.S. and 3c penalty.

The 6c Postage Dues is proper on this letter.
Although  marked "Ship's Letter" it does not have the required endorsement
of a senior officer in order for it to enjoy the special 2c military rate to the U.S.