29 SEPTEMBER 1906: ARAYAT, PAMPANGA to MANILA Double rated Constabulary official mail, 1 ounce weight,  bearing 1c x 2 Franklins 1903 issue. Transit backstamped CALUMPIT/ BULACAN / OCT 1. MANILA / OCT 2 arrival alongside.

26 JULY 1906: SINILOAN, LAGUNA to MANILA Double rated Constabulary official mail with 2c Washington 1903 issue handstamped with Type VIII O.B. in black. Backstamped PANGUIL / JUL 26 and PAETE / JUL 27, both in Laguna, and MANILA / JUL 28.

16 JULY 1906: DAGUPAN, PANGASINAN to MANILA Double rated Constabulary official mail with 2c Washington 1904 issue handstamped with O.B. in black. Backstamped  MANILA on the same day.

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