10 DECEMBER 1906: MALOLOS, BULACAN to MANILA,
Franked with 8c M. Washington with blue O.B. Backstamped MANILA on the same day.

22 OCTOBER 1906:  MANILA to SAN ISIDRO, NUEVA ECIJA
Constabulary official mail endorsed “CONFIDENTIAL”   dispatched via Special Delivery
per 10c blue Messenger with Type VIII blue vertical reading down handstamp on the Messenger
and mixed with 6c Magellan 1906 “PHILIPPINE ISLANDS” issue with purple encircled “OB” 
(Large OB Type VII) paying for the 3 ounces weight.  Backstamped SAN ISIDRO / OCT 23.

ONLY KNOWN COVER BEARING TYPE VIII BLUE O.B. ON SPECIAL DELIVERY
UNIQUE COMBINATION OF THE TWO ISSUES

Frame 5 / Page 71
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