3"- 6" - near enough ...

I've got a 1961 shilling, Australian of course, it sits with a few foreign coins I was given in change over the years. Dunno where the shilling came from. It has a Merino ram's head on it cos Australia rode on the sheep's back from 1871 to the 1960s. I wonder if the change to decimal currency in 1966 had anything to do with that!

But I don't have a meter to put it in.