OB

OB, or O.B., stands for "official business", overprinted on stamps of the Philippines. While catalogs only list the major printed types, there are any number of handstamped, typewritten and even handwritten overprints used.

 File:Philippines OB ovpt.jpg|Printed O.B. overprint, one of many styles over the years. File:Phillippines OB typed.jpg|Typewritten. File:Philippines OB hand.jpg|Handwritten. File:Philippines Bandholz.jpg|Bandholz overprint. 

[[Category:O]]