It has been so many times that the Philippines had changed coins. My grandmother actually has a collection of coins even as far back as 1900s. Yeah, you read it right. I can only remember the Two-Peso coin. Hoho. Because I was born in 1986, I can only remember coins and paper money like the 5 peso bill.
The Old Philippines Coins are actually more heavier and bigger. Mind you, they are actually more detailed than what we have now.