Hi,
I have noticed that apparently there are at least two varieties of this coin. The normal one and one without grass. Does anyone know how to tell the two appart?

I found the answer on another message board:

"The error (so called error) can be located at the grass line in front of terry's front foot at the sock line.
On the no grass variety there is a bit of grass in front of Terry, it doesnt continue until his sock. "

Gonna have to check my Terry Fox Loonies and see which ones I have.

at his foot on the left hand side you will see a gap where there should be grass but there is none.my son has 1 in his collection and his is worth $20.00