1902, JULY 1: ILOILO to MANILA
Pane of 6 without selvage for 12c Triple Domestic Registered Rate.
REGISTERED / ILOILO, P.I. / JUL 1 1902 double circle purple cds on the side.
Backstamped double circle "RECEIVED / MANILA, P.I. / JUL 4."

"Booklet pane used on cover. One of two known. 
Similar usage from Manila brought $ 900.00 in Wolfers Sale, Jan, 1984."
pencil notation on the reverse.

1902, DECEMBER 22: MALABANG, P.I. / MINDANAO  to NEW YORK
Endorsed "Gift from Soldier". and "If not called for in 5 days, please return to:...."
Pane of 6 without selvage plus a pane pair on large wrapper front
for 20c Multiple Registered 4th Class Parcel Rate at 12c for 12 ounces
weight and 8c Registration Fee. "UTICA / FEB 12 1903" arrival cds on front.

VERY SCARCE ORIGIN
THE 5TH COVER THAT I KNOW OF ORIGINATING FROM MALABANG

STILL DEEMED AS RARE EVEN WITH THREE ON HAND