EFO 1979 Philatelic Week

Overinking of the red overprint is indicated by streaks of lines and a dot. Also, the stamps at right in this vertical block of six have larger paper sizes than the ones at left due to boardwalk margins at right side.

90-sentimo Philatelic Week overprint of 1979 on ₱1.60 Felipe Agoncillo stamp of 1976.