31 AUGUST 31 1906: MALOLOS, BULACAN to MANILA
2c Washington carmine on oriental buff 1901 postal envelope
with blue inverted O.B. handstamp.  Backstamped MANILA / SEP 1.
BLOCK TYPE O.B. ON POSTAL STATIONERY EXTREMELY SCARCE

27 JULY 1906: DAGUPAN, PANGASINAN to MANILA
2c Washington with handstamped blue O.B. used to pay for the postage deficit
without penalty of 2 ounces weight cover instead of  the 1 ounce pre-paid with
1c x 2 Franklin with red  “OFFICIAL / BUSINESS” handstamp, both vertical reading downwards.
UNIQUE COMBINATION OF THE TWO TYPES OF OFFICIAL HANDSTAMPS
Blue P-116
Blue P-117
Blue P-118
Blue P-119
Blue P-120
Blue P-121
Blue P-122
Blue Extra 1
Red O.B.
Frame 8 / Page 119