7 JULY 1906: SAN FERNANDO, PAMPANGA to MANILA
Bureau of Construction official mail, double  rated at 1 ounce weight with 1c x 2 Franklin with red O.B.,
stamps supplied by the Philippine Constabulary. Backstamped MANILA on the same day.

24 MAY 1906: BONTOC PROVINCE to MANILA
17c rated registered official mail,  for 9c postage at 4-1/2 ounces weight and 8c registry fee
paid  with pair 1899 3c Jackson, 1903 1c Franklin and 10c Webster all with red O.B.
Backstamped  MANILA / JUN 14.

10c WEBSTER TYPE I RED O.B. EXTREMELY UNCOMMON ON COVER

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< Type I Small O.B. in Purple
Type II Iloilo Marking #1 >