you might know sometime WC is wrong. On that there is a very trustable book called "THE FRANC" that make a difference on that - there are specificly 2 different coin describe www.lefranc.net/franc/lefranc0000.html.
fact is that there is an "heavy one" and a "light one" this is the same for all this :
problem for now is that we are correcting the french catalogue for now, and not doing it is in the same time in the english one, so you can see the difference if you look the french version... and if you get a bit of french (lourde=heavy, ligth=légère). We ll change that fast.
"May the force be with you..."
Séverine, Laurent, la grande Charline et le petit Corentin
Mende - Lozère
France