A British 10p coin, and all British coins for that matter, are not magnetic.
A British 10p coin contains 75% copper and 25% nickel.
A 10p coin in the United Kingdom is made of nickel-plated steel.
The one that is not a 10p is a 20p. The other coin is a 10p. The question/riddle does not say that neither coin is a 10p, only that one of them is not.
20p and 10p
1
how much is a 10p1976 eire coin
A quarter and a nickel. The quarter is the coin that's not a nickel!
£1 coin + 50p coin + 2x20p coins + 10p coin = £2
Éire is the official name for Ireland. 10p is an old Irish coin that is no longer used, as since 2002, Ireland has used the Euro.
elizabeth 11 bailiwick of guernsey 1992 10p coin worth
Apparently they were a token for vending or gaming machines.