Inside a 19.0 x 10.0 mm rectangular box and handstamped only
on postal stationery issues. Used from November 1906 to February 1907
and only in the provinces of Bulacan, Cavite and Nueva Ecija.


Frame Size: 19.0 x 10.0 mm
O.B. Size: 13.0 x 4.0 mm


23 NOVEMBER 1906: CAVITE to MANILA
On 1c black on buff McKinley 1906 postal card. Same day MANILA entry on front.



1907 FEBRUARY 12: SAN ISIDRO, NUEVA ECIJA to MANILA
On 2c Washington 1903 carmine on white postal envelope.
Same day MANILA entry on verso.

EACH WITH ONLY THREE RECORDED EXAMPLES 
Frame 6 / Page 96
P-96
P-97
< Type XVI Small O.B.
Type XVIII Small O.B. >