MIL. STA. DAGUPAN / PHIL. ISLES.
Circular Steel Duplex in Violet or violet-Black
Period of Use: February 4, 1900 to April 12, 1900

1900 FEBUARY 4: DAGUPAN to PHILADELPHIA

This is the new ERU date, postmarkedone day earlier than the previous
known earliest recorded use of February 5, 1900.

Postmark more often exist in deformed state.

Ref: Goodale A-1 and Baker C-4

LATEST EARLIEST RECORDED USE