CORREGIDOR / MANILA BAY, P.I.
Double Steel Duplex in Black

ADDRESSED TO MANILA

11 OCTOBER, 1902

Using 2c "PHILIPPINES" carmine on white
postal envelope for Single Domestic
Rate per 1 ounce weight.

SUBIC / ZAMBALES, P.I.
Circular Steel Duplex in Black

ADDRESSED TO MANILA
24 JULY, 1906

Using 1c "PHILIPPINES" green on white
postal envelope for Single Domestic
Rate per 1/2 ounce weight.
Backstamped OLONGAPO, July 17
and MANILA, July 28.

OLONGAPO / ZAMBALES, P.I.
Circular Steel Duplex in Black

ADDRESSED TO PENSYLVANIA

19 NOVEMBER, 1904

Backstamped MOUNT CARMEL,
January 5, 1905.

MALABANG, P.I. / Mindanao
Circular Duplex in Purple

MALABANG to COLORED

12 FEBRUARY, 1903

Military mail using 2c "PHILIPPINES"
carmine on white postal envelope.
Backstamped MANILA, February 19
and partial COLORADO postmark
on the side.