Obverse
Portrait of Marcelo H. del Pilar, an intellectual of the Propaganda Movement against Spain "Marcelo H. del Pilar" "Republika ng Pilipinas"
Reverse
The rare monkey-eating eagle (Pithecophaga jefferyi), an endangered species found only in remote mountainous areas of the Philippines "50 Sentimo" "Pithecophaga jefferyi"
Note
“Pi” in Baybayin Script used to be referred to as "Issuer's Mark" in the 80's by the CBP in their documentation. After that, in the 90's BSP started to refer to it as "Mintmark" in their documentation
Remarks
After this coin was considered demonetized pursuant to BSP Circular No. 81 dated