26 FEBRUARY 1906: ILOILO, PANAY ISLD. to MANILA
8c rated Constabulary mail for 4 ounces weight, franked with 1c Franklin,
2c Washington 1903 issue and 5c Lincoln, all with red O.B. Backstamped MANILA / FEB 28.

16 MARCH 1906: TUGUEGARAO, CAGAYAN to MANILA
Philippine Constabulary official mail, 1 ounce weight, with 2c Washington 1903 issue,
with red O.B. Backstamped APARRI, CAGAYAN / MAR 18 and MANILA / MAR 22.

THE ONLY TWO RECORDED COVERS WITH 1903 2c WASHINGTON TYPE I RED O.B.

Frame 3 / Page 35
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< Type I Small O.B. in Purple
Type II Iloilo Marking #1 >