1906 AUGUST 31: MALOLOS, BULACAN to MANILA 2c Washington carmine on oriental buff 1901 postal envelope with blue inverted O.B. handstamp.  Backstamped MANILA / SEP 1. TYPE I LARGE O.B. ON POSTAL STATIONERY EXTREMELY UNCOMMON 1906 MAY 7: MALOLOS, BULACAN to MANILA With 10c Webster Type I for 10 times multiple rate, 5 ounces maximum weight. EXTREMELY UNCOMMON VALUE ON COVER

Large O.B.

Blue-1

Blue-2

Blue-3

Blue-4

Blue-5

Blue-6

Blue-7

Blue-8

Blue-9

Red O.B.

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