MANILA, P.I. / No. 2 DUPLEX 

1916 SEPTEMBER 15: MANILA to HONOLULU
1916 NOVEMBER 21: MANILA to CALIFORNIA

Both envelopes with the very scarce MANILA, P.I. / No. 2 duplex, a sub-post office station located at the Aduana or Customs House. Reported to have been opened early March 1916, and closed by year's end due to low volume of mail processed. Thereafter the mailing public directed to the Pier Station Post Office located at Pier 7.

07.07.2008