Variety Of 2006, 2$ Coin

Hi !

I already see a topic on this subject several month ago but I can not find them.

I have take note that someone write that it have 4 different 2$ coin in 2006.

1- 10th anniversary 1996-2006 with date at bottom
2- 10th anniversary 1996-2006 with date at top
3- 2006 with date at bottom
4- 2006 with date at top

I remember that it have some interogation at the moment of the post.

Can someone tell me if all 4 variety really exist and the approximate value.

Thanks !