18 APRIL 1906: CAVITE, CAVITE  to MANILA
Provincial official mail with 2c Washington 1899 issue with large black O.B. for the proper 1 ounce weight.
Backstamped MANILA / APR 19.

UNCOMMON ISSUE WITH TYPE I LARGE O.B. ON COVER


4 JANUARY 1907: MANILA CIRCULATING
Bureau of Justice official mail with 5c Lincoln 1904 issue handstamped with large violet O.B.,
for 2-1/2 ounces weight. 

THE LATEST RECORDED USE OF TYPE I LARGE O.B. 

Frame 7 / Page 104
<Small Type XVIII O.B.
P-99
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Type II Large O.B. >