18 JULY 1906: JOLO, JOLO  to MANILA
Constabulary official mail, quadruple weight, 2 ounces maximum, required postage paid using
2c x 6 Washingtons with large blue O.B.,  for proper 4c postage and 8c Registry Fee

4 SEPTEMBER 1906: ZAMBOANGA, MORO to MANILA
From the Treasurer of Zamboanga with  4c x 2 Lincolns with blue O.B. and unmarked 1c x 2 Franklins
on 4c Lincoln brown on white postal envelope  for 14c registered rate at 6c for 3 ounces weight
and 8c Registry Fee. MANILA / SEP 8 entry on verso.

EXTREMELY UNIQUE COMBINATION 

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< Large Type I O.B.
Type III Large O.B. >