20 AUGUST 1906: MANILA to MALOLOS, BULACAN, 
Blue O.B. on 1904 blue 5c Lincoln mixed with red and black O.B.  respectively on 1c Franklin
and 2c Washington. Backstamped MALOLOS the next day.

8 OCTOBER 1906: MALOLOS, BULACAN to MANILA
Blue O.B. on 1899 2c Washington carmine on white postal envelope for double rate official mail.
Backstamped MANILA / OCT 13.

17 JULY 1906: MANILA to CONSTANTINE, MICHIGAN, 
Blue O.B. on 1903 2c Washington carmine on oriental buff pse for proper single outbound rate
to the U.S. Backstamped  CONSTANTINE / AUG 24.

BOTH EXTREMELY UNCOMMON
LESS THAN FIVE RECORDED FOR EACH POSTAL ENVELOPE

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< Manuscript Markings
Type I Small O.B. in Black >