The exchange rate from 1967 is not readily available, but assuming a rough estimate of 2 Philippine pesos to 1 US dollar at that time, a limampung sentimos coin would be worth about 12.5 US cents.
A 1968 10 cent Sampung Sentimos coin is worth about 1 US dollar. This value is based on the assumption that the coin is circulated.
Google: 50 Philippine pesos to dollars Substitute dollars for your currency.
It sounds like you're referring to a Philippines 10 Sentimos Coin, which is actually cooper-nickel, with no silver content. In uncirculated condition, it catalogs for 35 cents - and in circulated condition, it has no catalog value.
The 1967 Kennedy half dollar is a 40% silver coin, value is about $5.00. The coin is very common.
The value of a 1 peso Philippine coin from 1972 can vary depending on its condition and rarity. However, as a general estimate, it is typically worth around $1 to $3 USD to collectors.
1967 centavos coin worth
Such a coin does not exist. There were no Australian 1967 50 cent coins minted.
3500
Australia does not have a "nickel" coin.
bilat
A brass Philippines 5 sentimo may be worth up to maybe .25 depending on amount of wear and collector demand. You might also try a library for a copy of the Standard Catalog of World Coins for pictures, values and lots more interesting info. Brad