30 APRIL 1906: TARLAC, TARLAC to MANILA
Constabulary official mail with 1c Franklin with red O.B, 1/2 ounce maximum weight.
Backstamped MANILA on the same day.
EARLIEST RECORDED USE

26 JUNE 1906: VIGAN, ILOCOS SUR to MANILA
3c Jackson issue of 1899 with red O.B. paying for the required 1-1/2 ounces weight
Constabulary official mail. Arrival entry of July 19 on verso.
NO MINT EXAMPLE REPORTED OF 3c JACKSON WITH RED O.B.
Blue O.B.
Red P-123
Red P-124
Red P-125
Red P-126
Red Extra 1
Red Extra 2
Red Extra 3
Red Extra 4
Frame 8 / Page 124