5 Piso Seal type 4

The date range on P#168 covers a remarkable political rupture: notes bearing Marcos and Fernandez signatures were already in production when the 1986 People Power Revolution forced Marcos into exile, and the plates simply kept running under Corazon Aquino's administration with new signature combinations substituted in. Four distinct signature pairings across one serial type is unusual for a denomination this low, and collectors targeting the Marcos-signed examples should note these circulated heavily in everyday commerce — the 5 Piso face value was still transactionally meaningful in the mid-1980s Philippines.

The Aquino/Fernandez pairing itself appears in two serial number colors, black and red, a production distinction whose precise operational cause has not been formally documented by the BSP.