Zero. No Eire (Irish) 10 Pence coin has ever contained any silver, they are made from a copper-nickel alloy.
All Eire (Irish) 50 Pence coins were made from a copper-nickel alloy.
Such a coin does not exist. The Eire (Irish) 10 Pence coin was first introduced into the currency in 1969.
All years of issue of the Eire 20 Pence coin are identical. See the link below.
It is a Woodcock.
There is no silver content in any general circulation British coin from 1947 onwards. The 10 Pence coin is made from 75% copper and 25% nickel.
Eire is the Irish name for Ireland. 5p refers to a 5 Pence coin.
Zero. There is no silver in any British general circulation 50 Pence coin, and there has been no silver in any British general circulation coin from 1947 onwards.
The Eire (Irish) 10 Pence coin was first issued in 1969 and last issued in 2000. It was made from an alloy of 75% copper and 25% nickel.
It contains 0% silver. Yes, that's a zero.
The Eire (Irish) 20 Pence coin minted from 1986 to 2000, is made from a nickel/bronze alloy and are not plated. Any discolouration (browning or yellowing) will most likely be due to light tarnishing of the coin.
Such a coin does not exist. Decimal currency was not introduced until 1971, including the 2 Pence coin.
Zero silver content. All general circulation Irish "silver" coins minted since 1951 have been made from a copper-nickel alloy.