Ireland 1/2 p mystery

This coin is magnetic it is different in color than the normal 1975 1/2 p coin . Weighs the same 1.75 g. Could it be plated or did I miss it on the internet...
A world without coins "Chaos"
0
This coin is magnetic it is different in color than the normal 1975 1/2 p coin . Weighs the same 1.75 g. Could it be plated or did I miss it on the internet...
A world without coins "Chaos"
Comments
A 1975 should not be magnetic. Check your date again, please. Plated steel was used from 1988
cheched. it is 1975
A world without coins "Chaos"