I have read that there's a new P1 coin to commemorate Jose Rizal. There will be ten million pieces of the new one-peso coin to be issued this month to commemorate the 150th Birth Anniversary of the Philippines national hero.
The Bangko Sentral ng Pilipinas (BSP) said its Monetary Board and the Office of the President approved the issuance of the commemorative coin as legal tender.
It has the same size, 24-millimeter in diameter and weight 5.35 grams, as the current P1 coin in circulation.
It's a round , grayish, nickel-plated coin with the bigger portrait of Rizal and the markings “150 years”, “Republika ng Pilipinas” , and “1861-2011″ while the other side has the new BSP seal, “1 piso” and “2011″.
This is just an addition to the current circulation of P1 coin.
Here are some pictures of old P1.