MALABANG, P.I. / Mindanao
Circular Steel Duplex in Violet or Purple
Period of Use: January 21, 1903 to July 19, 1903

1903 JANUARY 21: MALABANG to MANILA
As in the above, the few examples of this scarce postmark weakly struck.

THE EARLIEST KNOWN USE

MALABANG / MINDANAO, P.I. 
Goodale A-1 is the second device used at Malabang
with ERU of July 1, 1903