26 AUGUST 1906: MALOLOS, BULACAN to MANILA
4 times rated official mail, black manuscript "O.B." on 4c brown Grant issue of 1903.
Backstamped MANILA on the same day.

5 MARCH 1906: DUMAGUETE, NEGROS ISLD. to MANILA
14 times rated official mail, black manuscript O.B. on 2c carmine Washington x 7 issue of 1903.
Backstamped MANILA / MAR 9.

THE LARGEST RECORDED USE OF THE ISSUE


16 JUNE 1906: IBA, ZAMBALES to MANILA
Constabulary official mail, 2c  rated for 1 ounce weight, black manuscript “OB” on 1c x 2 Franklin,
carried by a navy ship to Manila where postmarked per large black “S” the first Paquebot
marking of the Philippines.
Frame 1 / Page 8
<Stamping Method
P-4
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P-6
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P-8
Type I Small O.B.>