3 JULY 1906: ALIAGA to SAN ISIDRO, NUEVA ECIJA 
Inter-province mail from the Municipal Secretary of Aliaga, official seal lightly struck
at upper left corner, with blue O.B. on 2c Washington 1903 issue. Same day arrival entry on verso
alongside CABANATUAN transit.

BOTH UNCOMMON USE BY OTHER GOVERNMENT OFFICE
OF CONSTABULARY PRODUCED TYPE I BLUE O.B. STAMPS


5 JUNE 1907: BALIUAG to MALOLOS, BULACAN
Inter-province mail from the Municipal Government of Baliuag, with blue O.B. on 2c Washington
1903 issue. Transit backstamped MANILA on the same day. MALOLOS / JUN 6 arrival alongside.
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